Heartless Hidetsugu + City on Fire + Platinum Angel

Heartless Hidetsugu
City on Fire
Platinum Angel

Requires
Heartless Hidetsugu must be on the battlefield. City on Fire must be on the battlefield. Platinum Angel must be on the battlefield. Heartless Hidetsugu does not have summoning sickness. Each opponent has a life total of two or greater.
Steps
  1. Activate Heartless Hidetsugu by tapping it, causing it to deal damage to each player equal to 3/2 their life total.
  2. Each opponent loses the game due to having zero or less life, and you do not lose the game due to Platinum Angel.
Results
Each opponent loses the game. Near-infinite damage.

Heartless Hidetsugu
14.13% of 1302 decks 184 decks
Auntie Blyte, Bad Influence
4.69% of 2089 decks 98 decks
Gisela, Blade of Goldnight
0.99% of 2425 decks 24 decks
Solphim, Mayhem Dominus
0.16% of 6236 decks 10 decks
Ashling the Pilgrim
0.31% of 2866 decks 9 decks
Obosh, the Preypiercer
0.48% of 1682 decks 8 decks
Rowan, Scion of War
0.09% of 8702 decks 8 decks
Zo-Zu the Punisher
0.29% of 2091 decks 6 decks
Valgavoth, Harrower of Souls
0.04% of 9100 decks 4 decks
Rakdos, Lord of Riots
0.05% of 7565 decks 4 decks
Kaervek the Merciless
0.22% of 1350 decks 3 decks
Chandra, Fire of Kaladesh
0.12% of 2501 decks 3 decks
Neheb, the Eternal
0.05% of 3794 decks 2 decks
Mogis, God of Slaughter
0.05% of 3766 decks 2 decks
Yurlok of Scorch Thrash
0.03% of 6446 decks 2 decks
Norin the Wary
0.05% of 3943 decks 2 decks
Kaalia of the Vast
0.01% of 21269 decks 2 decks
Kynaios and Tiro of Meletis
0.02% of 8060 decks 2 decks
New Cards
Boltwave
94% of 16 decks +76% synergy
Twinflame Tyrant
78% of 40 decks +66% synergy
Withering Torment
38% of 13 decks +20% synergy
Untimely Malfunction
33% of 63 decks +18% synergy
Unstoppable Slasher
31% of 16 decks +26% synergy
High Synergy Cards
Solphim, Mayhem Dominus
76% of 393 decks +72% synergy
Dictate of the Twin Gods
66% of 393 decks +64% synergy
Basilisk Collar
67% of 393 decks +64% synergy
Furnace of Rath
64% of 393 decks +63% synergy
Fiery Emancipation
65% of 393 decks +61% synergy
Deflecting Palm
66% of 32 decks +61% synergy
Fortune Thief
60% of 393 decks +60% synergy
Aurelia, the Warleader
66% of 32 decks +58% synergy
Avacyn, Angel of Hope
59% of 32 decks +56% synergy
Starnheim Aspirant
56% of 32 decks +55% synergy
Top Cards
Swiftfoot Boots
68% of 393 decks +40% synergy
Farseek
67% of 6 decks +32% synergy
Blasphemous Act
65% of 393 decks +31% synergy
Boros Charm
62% of 32 decks +38% synergy
Chaos Warp
62% of 393 decks +30% synergy
Swords to Plowshares
59% of 32 decks -3% synergy
Dark Ritual
57% of 40 decks +35% synergy
Lightning Greaves
57% of 393 decks +32% synergy
Gratuitous Violence
54% of 393 decks +52% synergy
Bloodletter of Aclazotz
53% of 30 decks +48% synergy
Creatures
The Locust God
60% of 5 decks +55% synergy
Torbran, Thane of Red Fell
52% of 393 decks +48% synergy
Sunspine Lynx
49% of 87 decks +47% synergy
Platinum Emperion
48% of 393 decks +47% synergy
Neheb, the Eternal
47% of 393 decks +45% synergy
Giada, Font of Hope
47% of 32 decks +46% synergy
Lyra Dawnbringer
44% of 32 decks +42% synergy
Firemane Commando
41% of 27 decks +38% synergy
Brash Taunter
39% of 393 decks +35% synergy
Fiendish Duo
38% of 393 decks +37% synergy
Balefire Liege
38% of 32 decks +36% synergy
Phyrexian Vindicator
38% of 32 decks +36% synergy
Righteous Valkyrie
38% of 32 decks +35% synergy
Kaervek the Merciless
38% of 40 decks +35% synergy
Sephara, Sky's Blade
38% of 32 decks +35% synergy
Solemn Simulacrum
36% of 393 decks +22% synergy
Aurelia, the Law Above
36% of 11 decks +31% synergy
Angrath's Marauders
36% of 393 decks +35% synergy
Sawhorn Nemesis
36% of 104 decks +34% synergy
Anger
35% of 393 decks +29% synergy
Anya, Merciless Angel
34% of 32 decks +34% synergy
Herald of War
31% of 32 decks +30% synergy
Bruna, the Fading Light
31% of 32 decks +30% synergy
Iroas, God of Victory
31% of 32 decks +27% synergy
Scytheclaw Raptor
31% of 180 decks +29% synergy
The Lord of Pain
31% of 13 decks +16% synergy
Generator Servant
30% of 393 decks +30% synergy
Stormfist Crusader
30% of 40 decks +26% synergy
Metropolis Reformer
29% of 24 decks +28% synergy
Zo-Zu the Punisher
29% of 393 decks +28% synergy
Chandra's Incinerator
28% of 393 decks +27% synergy
Rem Karolus, Stalwart Slayer
28% of 32 decks +27% synergy
Gisela, the Broken Blade
28% of 32 decks +27% synergy
Stuffy Doll
28% of 393 decks +27% synergy
Magus of the Wheel
27% of 393 decks +24% synergy
Judith, Carnage Connoisseur
27% of 26 decks +26% synergy
Harsh Mentor
27% of 393 decks +25% synergy
Iron Myr
27% of 393 decks +24% synergy
Auntie Blyte, Bad Influence
26% of 393 decks +26% synergy
Linvala, Keeper of Silence
25% of 32 decks +23% synergy
Ojer Axonil, Deepest Might
23% of 220 decks +21% synergy
Treasonous Ogre
23% of 393 decks +21% synergy
Vilis, Broker of Blood
22% of 40 decks +19% synergy
Gray Merchant of Asphodel
22% of 40 decks +13% synergy
Basandra, Battle Seraph
22% of 32 decks +21% synergy
Angel of Jubilation
22% of 32 decks +21% synergy
Boros Reckoner
22% of 32 decks +21% synergy
Grand Abolisher
22% of 32 decks +13% synergy
Esper Sentinel
22% of 32 decks +1% synergy
Volcano Hellion
21% of 393 decks +21% synergy
Instants
An Offer You Can't Refuse
60% of 5 decks +39% synergy
Path to Exile
53% of 32 decks +7% synergy
Lightning Bolt
53% of 393 decks +42% synergy
Seething Song
47% of 393 decks +41% synergy
Teferi's Protection
41% of 32 decks +21% synergy
Generous Gift
41% of 32 decks +15% synergy
Thrill of Possibility
40% of 393 decks +29% synergy
Price of Progress
31% of 393 decks +30% synergy
Demand Answers
31% of 163 decks +23% synergy
Overblaze
30% of 393 decks +30% synergy
Vampiric Tutor
30% of 40 decks +12% synergy
Big Score
29% of 393 decks +19% synergy
Deflecting Swat
28% of 393 decks +12% synergy
Enlightened Tutor
28% of 32 decks +10% synergy
Abrade
28% of 393 decks +17% synergy
Bedevil
28% of 40 decks +13% synergy
Rakdos Charm
28% of 40 decks +13% synergy
Red Elemental Blast
26% of 393 decks +20% synergy
Unexpected Windfall
26% of 393 decks +20% synergy
Stroke of Midnight
25% of 16 decks +13% synergy
Terminate
25% of 40 decks +4% synergy
Impact Resonance
23% of 393 decks +23% synergy
Return the Favor
23% of 125 decks +18% synergy
Tibalt's Trickery
23% of 393 decks +17% synergy
Pyroblast
23% of 393 decks +17% synergy
Blood for the Blood God!
22% of 40 decks +19% synergy
Akroma's Will
22% of 32 decks +12% synergy
Expedite
20% of 393 decks +18% synergy
Pyretic Ritual
20% of 393 decks +17% synergy
Arcbond
19% of 393 decks +18% synergy
Bolt Bend
19% of 393 decks +15% synergy
Angel's Grace
19% of 32 decks +17% synergy
Lightning Helix
19% of 32 decks +17% synergy
Wear // Tear
19% of 32 decks +11% synergy
Valakut Awakening
16% of 393 decks +10% synergy
Flawless Maneuver
16% of 32 decks +6% synergy
Desperate Ritual
16% of 393 decks +13% synergy
Fire Covenant
15% of 40 decks +12% synergy
Reverberate
13% of 393 decks +10% synergy
Breath of Malfegor
12% of 40 decks +12% synergy
Chance for Glory
12% of 32 decks +12% synergy
Malakir Rebirth
12% of 40 decks +4% synergy
Deadly Rollick
12% of 40 decks +2% synergy
Soul's Fire
11% of 393 decks +10% synergy
Rowan's Grim Search
11% of 35 decks +11% synergy
Bitter Triumph
11% of 27 decks +7% synergy
Volcanic Fallout
11% of 393 decks +10% synergy
March of Wretched Sorrow
10% of 40 decks +10% synergy
Hellish Rebuke
10% of 40 decks +9% synergy
Erebos's Intervention
10% of 40 decks +9% synergy
Sorceries
Mana Geyser
53% of 393 decks +46% synergy
Nature's Lore
50% of 6 decks +18% synergy
Faithless Looting
46% of 393 decks +29% synergy
Vandalblast
45% of 393 decks +29% synergy
Isengard Unleashed
44% of 220 decks +43% synergy
Jeska's Will
43% of 393 decks +26% synergy
Farewell
38% of 32 decks +24% synergy
Demonic Tutor
38% of 40 decks +15% synergy
Insult // Injury
36% of 393 decks +36% synergy
Gamble
36% of 393 decks +26% synergy
Feed the Swarm
35% of 40 decks +17% synergy
Exsanguinate
32% of 40 decks +27% synergy
Earthquake
31% of 393 decks +29% synergy
Austere Command
28% of 32 decks +15% synergy
Torment of Hailfire
28% of 40 decks +23% synergy
Wheel of Misfortune
26% of 393 decks +22% synergy
Idyllic Tutor
25% of 32 decks +20% synergy
Toxic Deluge
25% of 40 decks +7% synergy
Flame Rift
24% of 393 decks +23% synergy
Tormenting Voice
23% of 393 decks +20% synergy
Acidic Soil
21% of 393 decks +21% synergy
Cathartic Reunion
21% of 393 decks +17% synergy
Sign in Blood
20% of 40 decks +10% synergy
Prisoner's Dilemma
20% of 146 decks +18% synergy
Grab the Prize
20% of 56 decks +13% synergy
Rush of Dread
19% of 21 decks +18% synergy
Chandra's Ignition
19% of 393 decks +14% synergy
Rip Apart
16% of 32 decks +12% synergy
Wrath of God
16% of 32 decks +9% synergy
Grim Tutor
15% of 40 decks +10% synergy
Diabolic Tutor
15% of 40 decks +9% synergy
Reanimate
15% of 40 decks -1% synergy
Reckless Handling
13% of 307 decks +11% synergy
Chain Reaction
13% of 393 decks +8% synergy
Rolling Earthquake
13% of 393 decks +12% synergy
Defy Death
12% of 32 decks +12% synergy
Peer into the Abyss
12% of 40 decks +9% synergy
Read the Bones
12% of 40 decks +5% synergy
Damnation
12% of 40 decks +5% synergy
Night's Whisper
12% of 40 decks +3% synergy
Fiery Confluence
12% of 393 decks +10% synergy
Browbeat
10% of 393 decks +10% synergy
Seize the Spoils
10% of 393 decks +7% synergy
Swallowing Plague
10% of 40 decks +10% synergy
Syphon Soul
10% of 40 decks +10% synergy
Battle at the Bridge
10% of 40 decks +10% synergy
Fraying Omnipotence
10% of 40 decks +10% synergy
Their Number Is Legion
10% of 40 decks +10% synergy
Smallpox
10% of 40 decks +9% synergy
Scheming Symmetry
10% of 40 decks +8% synergy
Utility Artifacts
Ruby Medallion
51% of 393 decks +48% synergy
Loxodon Warhammer
51% of 393 decks +49% synergy
Resurrection Orb
41% of 393 decks +40% synergy
Shadowspear
40% of 393 decks +37% synergy
Thousand-Year Elixir
34% of 393 decks +32% synergy
Sting, the Glinting Dagger
28% of 261 decks +27% synergy
Dark Sphere
26% of 393 decks +26% synergy
Ankh of Mishra
23% of 393 decks +23% synergy
Lich's Mirror
21% of 393 decks +21% synergy
Mithril Coat
21% of 277 decks +15% synergy
Pariah's Shield
21% of 393 decks +21% synergy
Archaeomancer's Map
19% of 32 decks +15% synergy
Dissection Tools
19% of 54 decks +18% synergy
Grafted Exoskeleton
16% of 393 decks +15% synergy
Lavaspur Boots
16% of 127 decks +14% synergy
Bolas's Citadel
15% of 40 decks +6% synergy
Hammer of Purphoros
14% of 393 decks +13% synergy
Whip of Erebos
12% of 40 decks +9% synergy
Sunforger
12% of 32 decks +8% synergy
Wayfarer's Bauble
12% of 393 decks +2% synergy
The Stasis Coffin
12% of 393 decks +12% synergy
Battlemage's Bracers
12% of 393 decks +11% synergy
Commander's Plate
11% of 393 decks +9% synergy
Batterbone
11% of 393 decks +11% synergy
The Golden Throne
10% of 393 decks +10% synergy
The One Ring
10% of 393 decks +1% synergy
Pact Weapon
10% of 40 decks +9% synergy
General's Regalia
10% of 393 decks +10% synergy
Endless Atlas
9% of 393 decks +8% synergy
Darksteel Plate
9% of 393 decks +8% synergy
Tarrian's Soulcleaver
9% of 186 decks +7% synergy
Illusionist's Bracers
8% of 393 decks +6% synergy
Batterskull
7% of 393 decks +7% synergy
The Ozolith
7% of 393 decks +3% synergy
Pentagram of the Ages
7% of 393 decks +7% synergy
Expedition Map
7% of 393 decks +3% synergy
Fiendlash
6% of 393 decks +6% synergy
Dragon's Claw
6% of 393 decks +6% synergy
Staff of the Flame Magus
6% of 393 decks +6% synergy
Sword of the Animist
6% of 393 decks +1% synergy
Sun Droplet
5% of 393 decks +5% synergy
Boots of Speed
5% of 393 decks +5% synergy
Hazoret's Monument
5% of 393 decks +4% synergy
The Reaver Cleaver
5% of 393 decks +1% synergy
Enchantments
Heartbeat of Spring
50% of 6 decks +49% synergy
Smothering Tithe
50% of 32 decks +25% synergy
Phyrexian Arena
45% of 40 decks +30% synergy
Manabarbs
39% of 393 decks +37% synergy
Descent into Avernus
36% of 393 decks +33% synergy
Land Tax
34% of 32 decks +28% synergy
Roiling Vortex
31% of 393 decks +29% synergy
Wound Reflection
30% of 40 decks +28% synergy
Uncivil Unrest
28% of 354 decks +26% synergy
Sulfuric Vortex
28% of 393 decks +26% synergy
Rising of the Day
27% of 299 decks +21% synergy
Blood Moon
26% of 393 decks +23% synergy
Spellshock
26% of 393 decks +25% synergy
Havoc Festival
25% of 40 decks +24% synergy
True Conviction
25% of 32 decks +23% synergy
Quest for Pure Flame
25% of 393 decks +24% synergy
Underworld Dreams
22% of 40 decks +20% synergy
Exquisite Blood
22% of 40 decks +17% synergy
Pariah
22% of 32 decks +21% synergy
All Will Be One
20% of 393 decks +17% synergy
Flowering of the White Tree
19% of 21 decks +13% synergy
Citadel of Pain
18% of 393 decks +17% synergy
Painful Quandary
18% of 40 decks +15% synergy
The Meathook Massacre
18% of 40 decks +12% synergy
Black Market Connections
18% of 40 decks +6% synergy
The Rollercrusher Ride
17% of 63 decks +15% synergy
Pyrohemia
16% of 393 decks +15% synergy
Ghostly Prison
16% of 32 decks +4% synergy
Powerbalance
15% of 112 decks +12% synergy
Repercussion
14% of 393 decks +13% synergy
Dark Tutelage
12% of 40 decks +12% synergy
Oubliette
12% of 40 decks +12% synergy
Spiteful Visions
12% of 40 decks +10% synergy
Necropotence
12% of 40 decks +7% synergy
Mechanized Warfare
12% of 393 decks +11% synergy
Curse of Bloodletting
12% of 393 decks +11% synergy
Smoke
12% of 393 decks +11% synergy
Fervor
11% of 393 decks +10% synergy
Bitter Reunion
10% of 393 decks +9% synergy
Protection Racket
10% of 40 decks +9% synergy
Greed
10% of 40 decks +8% synergy
Angelic Renewal
9% of 32 decks +9% synergy
Shielded by Faith
9% of 32 decks +8% synergy
Luminarch Ascension
9% of 32 decks +8% synergy
Virtue of Courage
9% of 234 decks +7% synergy
Burning Earth
9% of 393 decks +8% synergy
Leyline of Punishment
8% of 393 decks +8% synergy
Warlock Class
8% of 40 decks +7% synergy
Polluted Bonds
8% of 40 decks +7% synergy
Theater of Horrors
8% of 40 decks +5% synergy
Planeswalkers
Chandra, Torch of Defiance
27% of 393 decks +25% synergy
Koth, Fire of Resistance
14% of 393 decks +12% synergy
Serra the Benevolent
9% of 32 decks +9% synergy
The Wanderer
9% of 32 decks +8% synergy
Nahiri, the Harbinger
9% of 32 decks +8% synergy
Koth of the Hammer
8% of 393 decks +7% synergy
Ob Nixilis, the Adversary
8% of 40 decks +6% synergy
Chandra, Awakened Inferno
7% of 393 decks +6% synergy
Chandra, Dressed to Kill
5% of 393 decks +5% synergy
Utility Lands
Witch's Clinic
48% of 393 decks +46% synergy
Arena of Glory
39% of 109 decks +31% synergy
Glacial Chasm
38% of 393 decks +37% synergy
Valakut, the Molten Pinnacle
33% of 393 decks +31% synergy
Spinerock Knoll
29% of 393 decks +24% synergy
Sunhome, Fortress of the Legion
28% of 32 decks +23% synergy
Bojuka Bog
28% of 40 decks -3% synergy
War Room
27% of 393 decks +20% synergy
Slayers' Stronghold
25% of 32 decks +19% synergy
Minas Tirith
23% of 22 decks +14% synergy
Emeria, the Sky Ruin
22% of 32 decks +19% synergy
Cabal Coffers
20% of 40 decks +9% synergy
Barbarian Ring
19% of 393 decks +19% synergy
Rogue's Passage
18% of 393 decks -1% synergy
Nykthos, Shrine to Nyx
18% of 393 decks +12% synergy
Ancient Tomb
15% of 393 decks +4% synergy
Windbrisk Heights
12% of 32 decks +8% synergy
Eiganjo, Seat of the Empire
12% of 32 decks +4% synergy
Shivan Gorge
12% of 393 decks +10% synergy
Forgotten Cave
12% of 393 decks +8% synergy
Hall of the Bandit Lord
11% of 393 decks +11% synergy
The Black Gate
11% of 35 decks +8% synergy
Temple of the False God
11% of 393 decks +1% synergy
Castle Locthwain
10% of 40 decks +5% synergy
Reliquary Tower
10% of 393 decks -20% synergy
Ramunap Ruins
10% of 393 decks +9% synergy
Command Beacon
8% of 393 decks +4% synergy
Urza's Saga
8% of 393 decks +1% synergy
Mines of Moria
6% of 299 decks +1% synergy
Flamekin Village
6% of 393 decks +5% synergy
Sokenzan, Crucible of Defiance
6% of 393 decks +1% synergy
Mana Artifacts
Sol Ring
90% of 393 decks +6% synergy
Arcane Signet
68% of 393 decks -5% synergy
Izzet Signet
60% of 5 decks +32% synergy
Boros Signet
53% of 32 decks +30% synergy
Talisman of Conviction
50% of 32 decks +27% synergy
Talisman of Indulgence
48% of 40 decks +21% synergy
Rakdos Signet
42% of 40 decks +13% synergy
Mind Stone
33% of 393 decks +16% synergy
Fire Diamond
26% of 393 decks +21% synergy
Throne of Eldraine
26% of 234 decks +23% synergy
Patriar's Seal
25% of 393 decks +23% synergy
Cursed Mirror
16% of 393 decks +10% synergy
Glittering Stockpile
15% of 393 decks +13% synergy
Commander's Sphere
14% of 393 decks -1% synergy
Fellwar Stone
14% of 393 decks -7% synergy
Caged Sun
12% of 393 decks +10% synergy
Thran Dynamo
10% of 393 decks +6% synergy
Jeweled Lotus
10% of 393 decks +4% synergy
Boros Cluestone
9% of 32 decks +9% synergy
Thought Vessel
9% of 393 decks -8% synergy
Mana Crypt
9% of 393 decks +1% synergy
Charcoal Diamond
8% of 40 decks +2% synergy
Nyx Lotus
7% of 393 decks +5% synergy
Pristine Talisman
7% of 393 decks +5% synergy
Mana Vault
6% of 393 decks -0% synergy
Pyromancer's Goggles
6% of 393 decks +4% synergy
Gilded Lotus
5% of 393 decks +2% synergy
Liquimetal Torque
5% of 393 decks +2% synergy
Lands
Clifftop Retreat
72% of 32 decks +43% synergy
Training Center
60% of 5 decks +33% synergy
Smoldering Marsh
60% of 40 decks +27% synergy
Spectator Seating
59% of 32 decks +34% synergy
Abraded Bluffs
56% of 9 decks +51% synergy
Sacred Foundry
53% of 32 decks +17% synergy
Rockfall Vale
50% of 6 decks +28% synergy
Rootbound Crag
50% of 6 decks +26% synergy
Luxury Suite
50% of 40 decks +24% synergy
Dragonskull Summit
50% of 40 decks +19% synergy
Blood Crypt
48% of 40 decks +9% synergy
Rugged Prairie
47% of 32 decks +36% synergy
Sundown Pass
47% of 32 decks +32% synergy
Boros Garrison
44% of 32 decks +29% synergy
Furycalm Snarl
41% of 32 decks +27% synergy
Temple of Triumph
41% of 32 decks +24% synergy
Battlefield Forge
41% of 32 decks +15% synergy
Mount Doom
40% of 40 decks +32% synergy
Needleverge Pathway
38% of 32 decks +28% synergy
Sulfurous Springs
38% of 40 decks +17% synergy
Foreboding Ruins
35% of 40 decks +19% synergy
Haunted Ridge
32% of 40 decks +17% synergy
Wind-Scarred Crag
31% of 32 decks +25% synergy
Boros Guildgate
28% of 32 decks +23% synergy
Myriad Landscape
28% of 393 decks +8% synergy
Blightstep Pathway
28% of 40 decks +18% synergy
Rakdos Carnarium
28% of 40 decks +13% synergy
Graven Cairns
25% of 40 decks +17% synergy
Blazemire Verge
25% of 16 decks +5% synergy
Raucous Theater
23% of 26 decks +10% synergy
Sunbaked Canyon
22% of 32 decks +17% synergy
Blackcleave Cliffs
20% of 40 decks +14% synergy
Tainted Peak
20% of 40 decks +10% synergy
Shadowblood Ridge
20% of 40 decks +8% synergy
Badlands
20% of 40 decks +7% synergy
Command Tower
19% of 393 decks -55% synergy
Temple of Malice
18% of 40 decks +3% synergy
City of Brass
15% of 393 decks +7% synergy
Sulfurous Mire
15% of 40 decks +13% synergy
Canyon Slough
12% of 40 decks +6% synergy
Plateau
12% of 32 decks +0% synergy
Grand Coliseum
10% of 393 decks +10% synergy
Geothermal Bog
10% of 40 decks +6% synergy
Bloodfell Caves
10% of 40 decks +3% synergy
Evolving Wilds
10% of 393 decks -11% synergy
Alpine Meadow
9% of 32 decks +7% synergy
Sacred Peaks
9% of 32 decks +5% synergy
Rustvale Bridge
9% of 32 decks +4% synergy
Tarnished Citadel
8% of 393 decks +8% synergy
Bloodstained Mire
7% of 393 decks -3% synergy