Sudden Death (Card)
Sudden Death
In 1536 decks
0% of 2009709 decks
New Commanders (1)
Massacre Girl, Known Killer
2.39% of 2431 decks
58 decks
Top Commanders (3)
Toshiro Umezawa
4.35% of 1770 decks
77 decks
Phage the Untouchable
3.59% of 1530 decks
55 decks
K'rrik, Son of Yawgmoth
0.73% of 11342 decks
83 decks
New Cards (5)
Insatiable Avarice
52% of 21 decks
+47% synergy
V.A.T.S.
28% of 50 decks
+25% synergy
Slice from the Shadows
22% of 100 decks
+21% synergy
Shadowy Backstreet
21% of 19 decks
+17% synergy
Insidious Roots
20% of 20 decks
+18% synergy
High Synergy Cards (5)
Krosan Grip
45% of 324 decks
+41% synergy
Dark Ritual
44% of 1536 decks
+33% synergy
Sudden Spoiling
29% of 1536 decks
+28% synergy
Putrefy
31% of 324 decks
+28% synergy
Terminate
30% of 337 decks
+25% synergy
Top Cards (10)
Swords to Plowshares
45% of 241 decks
+16% synergy
Counterspell
41% of 371 decks
+20% synergy
Cultivate
39% of 323 decks
+17% synergy
Feed the Swarm
32% of 1456 decks
+23% synergy
Rampant Growth
32% of 324 decks
+16% synergy
Path to Exile
29% of 241 decks
+10% synergy
Negate
29% of 371 decks
+17% synergy
Rakdos Charm
28% of 337 decks
+25% synergy
Swiftfoot Boots
27% of 1534 decks
-1% synergy
Farseek
27% of 324 decks
+11% synergy
Creatures (50)
Gray Merchant of Asphodel
26% of 1529 decks
+21% synergy
Eternal Witness
23% of 324 decks
+13% synergy
Sakura-Tribe Elder
23% of 324 decks
+13% synergy
Ignoble Hierarch
22% of 85 decks
+20% synergy
Crypt Ghast
21% of 1530 decks
+19% synergy
Llanowar Elves
18% of 324 decks
+7% synergy
Kaervek, the Punisher
17% of 29 decks
+16% synergy
Birds of Paradise
17% of 324 decks
+5% synergy
Bartolomé del Presidio
17% of 30 decks
+14% synergy
Elvish Mystic
17% of 321 decks
+8% synergy
Spitting Dilophosaurus
16% of 207 decks
+16% synergy
Orcish Bowmasters
16% of 449 decks
+9% synergy
Solemn Simulacrum
16% of 1536 decks
+1% synergy
Teysa, Opulent Oligarch
16% of 19 decks
+15% synergy
Elves of Deep Shadow
16% of 324 decks
+13% synergy
Reclamation Sage
15% of 320 decks
+9% synergy
Hunted Bonebrute
15% of 118 decks
+14% synergy
Notion Thief
15% of 369 decks
+13% synergy
Sun Titan
15% of 241 decks
+9% synergy
Delney, Streetwise Lookout
14% of 22 decks
+11% synergy
Crime Novelist
14% of 22 decks
+10% synergy
Blood Artist
13% of 1534 decks
+7% synergy
Noble Hierarch
13% of 53 decks
+11% synergy
Vein Ripper
13% of 130 decks
+11% synergy
Dauthi Voidwalker
13% of 1403 decks
+8% synergy
Elas il-Kor, Sadistic Pilgrim
13% of 147 decks
+10% synergy
Fyndhorn Elves
13% of 324 decks
+6% synergy
Massacre Wurm
13% of 1534 decks
+11% synergy
Sliver Legion
12% of 48 decks
+12% synergy
Baleful Strix
12% of 370 decks
+9% synergy
Opposition Agent
12% of 1448 decks
+8% synergy
Dread Presence
12% of 1489 decks
+11% synergy
Mayhem Devil
12% of 330 decks
+9% synergy
Morbid Opportunist
11% of 1357 decks
+9% synergy
Sheoldred, the Apocalypse
11% of 986 decks
+8% synergy
Lotho, Corrupt Shirriff
11% of 73 decks
+7% synergy
Cankerbloom
11% of 128 decks
+7% synergy
Thousand-Faced Shadow
11% of 311 decks
+10% synergy
Zulaport Cutthroat
11% of 1521 decks
+5% synergy
Trumpeting Carnosaur
11% of 37 decks
+8% synergy
Vilis, Broker of Blood
11% of 1489 decks
+9% synergy
Kami of Whispered Hopes
11% of 112 decks
+7% synergy
Dockside Extortionist
11% of 329 decks
+3% synergy
Likeness Looter
11% of 76 decks
+9% synergy
Seedborn Muse
10% of 324 decks
+6% synergy
Massacre Girl
10% of 1494 decks
+9% synergy
Burnished Hart
10% of 1529 decks
+5% synergy
Silver-Fur Master
10% of 311 decks
+9% synergy
Syr Konrad, the Grim
10% of 1486 decks
+6% synergy
Nirkana Revenant
10% of 1534 decks
+9% synergy
Instants (50)
Beast Within
26% of 323 decks
+7% synergy
Chaos Warp
26% of 337 decks
+10% synergy
Mortify
25% of 241 decks
+22% synergy
Brainstorm
24% of 371 decks
+13% synergy
Cyclonic Rift
22% of 370 decks
+8% synergy
Dismember
22% of 1534 decks
+21% synergy
Void Rend
22% of 74 decks
+20% synergy
Dovin's Veto
22% of 88 decks
+17% synergy
Defile
21% of 1491 decks
+19% synergy
Tragic Slip
21% of 1534 decks
+19% synergy
Assassin's Trophy
21% of 317 decks
+14% synergy
Bedevil
20% of 330 decks
+17% synergy
Vampiric Tutor
19% of 1536 decks
+10% synergy
Wipe Away
19% of 371 decks
+19% synergy
An Offer You Can't Refuse
19% of 294 decks
+9% synergy
Angel's Grace
19% of 241 decks
+18% synergy
Bitter Triumph
18% of 207 decks
+15% synergy
Infernal Grasp
18% of 1357 decks
+13% synergy
Go for the Throat
17% of 1534 decks
+14% synergy
Abrupt Decay
17% of 323 decks
+15% synergy
Arcane Denial
17% of 371 decks
+8% synergy
Sheoldred's Edict
17% of 688 decks
+15% synergy
Utter End
16% of 240 decks
+14% synergy
Nature's Claim
16% of 323 decks
+10% synergy
Legolas's Quick Reflexes
15% of 33 decks
+13% synergy
Lightning Bolt
15% of 337 decks
+10% synergy
Sudden Edict
15% of 1408 decks
+15% synergy
Sultai Charm
15% of 88 decks
+14% synergy
Tear Asunder
14% of 188 decks
+13% synergy
Generous Gift
14% of 234 decks
+2% synergy
Drown in the Loch
14% of 360 decks
+12% synergy
Fracture
14% of 225 decks
+12% synergy
Thrill of Possibility
14% of 329 decks
+8% synergy
Join the Dead
14% of 207 decks
+13% synergy
Heroic Intervention
14% of 318 decks
-0% synergy
Opt
13% of 371 decks
+9% synergy
Mystical Tutor
13% of 371 decks
+5% synergy
Abzan Charm
13% of 85 decks
+12% synergy
Hero's Downfall
13% of 1529 decks
+12% synergy
Deadly Rollick
13% of 1465 decks
+8% synergy
Cabal Ritual
13% of 1536 decks
+10% synergy
Cut Down
13% of 922 decks
+12% synergy
Force of Despair
13% of 1492 decks
+12% synergy
Harrow
13% of 324 decks
+8% synergy
Imp's Mischief
12% of 1536 decks
+11% synergy
Deathsprout
12% of 314 decks
+11% synergy
Fact or Fiction
12% of 371 decks
+8% synergy
Despark
12% of 235 decks
+8% synergy
Murder
12% of 1533 decks
+11% synergy
Sudden Substitution
12% of 361 decks
+12% synergy
Sorceries (50)
Sign in Blood
27% of 1534 decks
+21% synergy
Demonic Tutor
26% of 1536 decks
+14% synergy
Blasphemous Act
23% of 337 decks
+7% synergy
Kodama's Reach
23% of 324 decks
+7% synergy
Toxic Deluge
22% of 1529 decks
+14% synergy
Supreme Verdict
22% of 91 decks
+19% synergy
Nature's Lore
20% of 324 decks
+6% synergy
Vandalblast
20% of 337 decks
+11% synergy
Read the Bones
19% of 1529 decks
+14% synergy
Diabolic Tutor
19% of 1536 decks
+15% synergy
Damnation
18% of 1536 decks
+13% synergy
Exsanguinate
17% of 1534 decks
+15% synergy
Culling Ritual
17% of 299 decks
+15% synergy
Reanimate
17% of 1536 decks
+10% synergy
Ponder
17% of 371 decks
+10% synergy
Night's Whisper
17% of 1536 decks
+12% synergy
Mutilate
16% of 1536 decks
+15% synergy
Faithless Looting
16% of 337 decks
+7% synergy
Three Visits
15% of 324 decks
+4% synergy
Damn
15% of 218 decks
+11% synergy
Farewell
14% of 201 decks
+8% synergy
Harmonize
14% of 324 decks
+9% synergy
Windfall
13% of 371 decks
+7% synergy
Merciless Eviction
13% of 241 decks
+12% synergy
Ringsight
12% of 114 decks
+11% synergy
Black Sun's Zenith
12% of 1534 decks
+11% synergy
Torment of Hailfire
12% of 1509 decks
+9% synergy
Preordain
12% of 371 decks
+6% synergy
Vindicate
12% of 241 decks
+10% synergy
Wrath of God
12% of 241 decks
+8% synergy
Beseech the Mirror
12% of 354 decks
+9% synergy
Eerie Ultimatum
12% of 78 decks
+10% synergy
Victimize
12% of 1536 decks
+6% synergy
Beseech the Queen
11% of 1535 decks
+10% synergy
Grim Tutor
11% of 1536 decks
+8% synergy
Bubbling Muck
11% of 1536 decks
+10% synergy
Jeska's Will
11% of 319 decks
+2% synergy
Gaze of Granite
11% of 322 decks
+10% synergy
Casualties of War
11% of 314 decks
+9% synergy
Nuclear Fallout
10% of 50 decks
+6% synergy
Austere Command
10% of 241 decks
+4% synergy
Peer into the Abyss
9% of 1464 decks
+7% synergy
Bala Ged Recovery
9% of 304 decks
+4% synergy
Buried Alive
9% of 1536 decks
+6% synergy
Search for Tomorrow
9% of 324 decks
+7% synergy
Dig Up
9% of 270 decks
+8% synergy
Unburial Rites
9% of 241 decks
+8% synergy
Drown in Ichor
9% of 636 decks
+7% synergy
Decree of Pain
8% of 1536 decks
+7% synergy
Dread Return
8% of 1536 decks
+6% synergy
Utility Artifacts (22)
Lightning Greaves
24% of 1536 decks
-2% synergy
Bolas's Citadel
19% of 1496 decks
+13% synergy
Jet Medallion
19% of 1536 decks
+17% synergy
Wayfarer's Bauble
15% of 1536 decks
+4% synergy
Sword of Wealth and Power
14% of 21 decks
+8% synergy
Expedition Map
13% of 1534 decks
+10% synergy
Sensei's Divining Top
11% of 1536 decks
+5% synergy
Skullclamp
9% of 1536 decks
-4% synergy
Whispersilk Cloak
9% of 1536 decks
+5% synergy
Aetherflux Reservoir
8% of 1515 decks
+4% synergy
Ashnod's Altar
8% of 1536 decks
+0% synergy
Wishclaw Talisman
8% of 1486 decks
+5% synergy
The One Ring
8% of 586 decks
-1% synergy
Tarrian's Soulcleaver
8% of 240 decks
+4% synergy
The Indomitable
7% of 41 decks
+6% synergy
Bontu's Monument
7% of 1510 decks
+4% synergy
Mithril Coat
6% of 457 decks
-1% synergy
The Great Henge
5% of 312 decks
+1% synergy
Bident of Thassa
5% of 369 decks
+2% synergy
Norn's Wellspring
5% of 112 decks
+5% synergy
Tithing Blade
5% of 207 decks
+4% synergy
Whip of Erebos
5% of 1529 decks
+3% synergy
Enchantments (50)
Phyrexian Arena
25% of 1536 decks
+18% synergy
Rhystic Study
20% of 371 decks
+6% synergy
Smothering Tithe
16% of 235 decks
+4% synergy
Animate Dead
15% of 1536 decks
+10% synergy
Tinybones Joins Up
14% of 21 decks
+12% synergy
Sylvan Library
13% of 324 decks
+6% synergy
Necropotence
12% of 1536 decks
+9% synergy
Mirari's Wake
12% of 86 decks
+8% synergy
Ghostly Prison
12% of 241 decks
+6% synergy
Deathreap Ritual
12% of 320 decks
+11% synergy
Black Market
12% of 1536 decks
+9% synergy
Mystic Remora
11% of 371 decks
+2% synergy
Tribute to the World Tree
10% of 115 decks
+6% synergy
Virtue of Persistence
10% of 328 decks
+8% synergy
Moldervine Reclamation
10% of 312 decks
+8% synergy
Black Market Connections
10% of 1084 decks
+4% synergy
The Meathook Massacre
9% of 1360 decks
+6% synergy
In the Darkness Bind Them
9% of 45 decks
+8% synergy
Fiery Inscription
9% of 103 decks
+6% synergy
Blind Obedience
9% of 241 decks
+6% synergy
Binding the Old Gods
9% of 300 decks
+7% synergy
Phyrexian Reclamation
9% of 1536 decks
+6% synergy
Virtue of Strength
8% of 48 decks
+6% synergy
Propaganda
8% of 371 decks
+3% synergy
In Too Deep
8% of 294 decks
+8% synergy
Pernicious Deed
8% of 324 decks
+7% synergy
Wild Growth
8% of 324 decks
+3% synergy
Underworld Breach
7% of 325 decks
+4% synergy
Feast of the Victorious Dead
7% of 82 decks
+7% synergy
Leyline of Anticipation
7% of 371 decks
+5% synergy
Greed
7% of 1536 decks
+6% synergy
Reflections of Littjara
7% of 346 decks
+4% synergy
Sanguine Bond
7% of 1534 decks
+4% synergy
Secret Plans
7% of 88 decks
+7% synergy
Rising of the Day
7% of 103 decks
+3% synergy
Revel in Riches
7% of 1506 decks
+5% synergy
Rhythm of the Wild
7% of 91 decks
+1% synergy
Doubling Season
6% of 324 decks
+2% synergy
Call of the Ring
6% of 449 decks
+4% synergy
Kaya's Ghostform
6% of 1496 decks
+4% synergy
Exquisite Blood
6% of 1534 decks
+4% synergy
Goblin Bombardment
6% of 337 decks
+3% synergy
Bastion of Remembrance
6% of 1465 decks
+3% synergy
Theater of Horrors
6% of 330 decks
+6% synergy
Verdant Embrace
6% of 324 decks
+6% synergy
Debtors' Knell
6% of 241 decks
+5% synergy
Curse of Opulence
6% of 334 decks
+4% synergy
Spiteful Banditry
6% of 107 decks
+4% synergy
Darksteel Mutation
5% of 240 decks
+3% synergy
Invigorating Hot Spring
5% of 75 decks
+5% synergy
Planeswalkers (12)
Liliana of the Dark Realms
9% of 1533 decks
+8% synergy
Tyvar, Jubilant Brawler
8% of 143 decks
+7% synergy
Ashiok, Dream Render
8% of 362 decks
+7% synergy
Professor Onyx
8% of 1433 decks
+7% synergy
Narset, Parter of Veils
8% of 362 decks
+5% synergy
The Eternal Wanderer
6% of 109 decks
+4% synergy
Kaito, Dancing Shadow
6% of 165 decks
+5% synergy
Nicol Bolas, Dragon-God
6% of 133 decks
+5% synergy
Nicol Bolas, Planeswalker
6% of 135 decks
+6% synergy
Nicol Bolas, God-Pharaoh
6% of 135 decks
+5% synergy
Kaya, Intangible Slayer
5% of 110 decks
+5% synergy
Ob Nixilis Reignited
5% of 1521 decks
+4% synergy
Utility Lands (44)
Bojuka Bog
35% of 1534 decks
+20% synergy
Cabal Coffers
31% of 1536 decks
+25% synergy
Urborg, Tomb of Yawgmoth
29% of 1536 decks
+18% synergy
Reliquary Tower
23% of 1534 decks
-5% synergy
Cabal Stronghold
19% of 1505 decks
+17% synergy
Rogue's Passage
17% of 1532 decks
-2% synergy
Nykthos, Shrine to Nyx
14% of 1529 decks
+9% synergy
Restless Fortress
13% of 60 decks
+12% synergy
Boseiju, Who Endures
13% of 264 decks
+4% synergy
Castle Locthwain
12% of 1486 decks
+8% synergy
Witch's Cottage
11% of 1489 decks
+9% synergy
Mystic Sanctuary
11% of 360 decks
+4% synergy
Takenuma, Abandoned Mire
10% of 1274 decks
+4% synergy
Barren Moor
10% of 1536 decks
+8% synergy
Otawara, Soaring City
10% of 309 decks
+2% synergy
Vault of the Archangel
10% of 241 decks
+8% synergy
Temple of the False God
10% of 1536 decks
-0% synergy
Ancient Tomb
10% of 1536 decks
-1% synergy
Restless Spire
9% of 32 decks
+9% synergy
Restless Cottage
9% of 57 decks
+8% synergy
Grim Backwoods
8% of 323 decks
+7% synergy
Alchemist's Refuge
8% of 88 decks
+6% synergy
Hidden Volcano
8% of 51 decks
+7% synergy
Creeping Tar Pit
8% of 371 decks
+7% synergy
Restless Reef
8% of 53 decks
+6% synergy
Command Beacon
7% of 1518 decks
+3% synergy
Phyrexian Tower
7% of 1536 decks
+3% synergy
War Room
7% of 1446 decks
+0% synergy
Shizo, Death's Storehouse
7% of 1536 decks
+5% synergy
Hidden Nursery
7% of 44 decks
+6% synergy
Secluded Steppe
7% of 241 decks
+5% synergy
Mortuary Mire
7% of 1521 decks
+4% synergy
Tranquil Thicket
6% of 324 decks
+5% synergy
Restless Vents
6% of 49 decks
+5% synergy
Thespian's Stage
6% of 1530 decks
+4% synergy
Dryad Arbor
6% of 324 decks
+4% synergy
Geier Reach Sanitarium
6% of 1515 decks
+2% synergy
Arcane Lighthouse
6% of 1525 decks
+4% synergy
Urza's Saga
6% of 1400 decks
-2% synergy
Minas Morgul, Dark Fortress
5% of 219 decks
+4% synergy
Shambling Vent
5% of 240 decks
+5% synergy
Emergence Zone
5% of 1496 decks
+3% synergy
Oran-Rief, the Vastwood
5% of 323 decks
+3% synergy
Barad-dûr
5% of 449 decks
+3% synergy
Mana Artifacts (44)
Sol Ring
76% of 1536 decks
-8% synergy
Arcane Signet
55% of 1486 decks
-15% synergy
Dimir Signet
38% of 371 decks
+30% synergy
Rakdos Signet
36% of 337 decks
+28% synergy
Izzet Signet
31% of 135 decks
+24% synergy
Talisman of Dominance
30% of 371 decks
+22% synergy
Orzhov Signet
29% of 241 decks
+22% synergy
Mind Stone
25% of 1536 decks
+6% synergy
Talisman of Indulgence
23% of 337 decks
+17% synergy
Talisman of Hierarchy
20% of 234 decks
+14% synergy
Fellwar Stone
19% of 1536 decks
-2% synergy
Golgari Signet
19% of 324 decks
+16% synergy
Talisman of Creativity
19% of 133 decks
+12% synergy
Simic Signet
18% of 88 decks
+15% synergy
Relic of Sauron
18% of 45 decks
+16% synergy
Talisman of Progress
18% of 91 decks
+13% synergy
Thought Vessel
17% of 1518 decks
+1% synergy
Charcoal Diamond
16% of 1536 decks
+13% synergy
Commander's Sphere
16% of 1525 decks
-1% synergy
Gruul Signet
15% of 94 decks
+12% synergy
Talisman of Resilience
14% of 313 decks
+12% synergy
Azorius Signet
14% of 91 decks
+8% synergy
Boros Signet
12% of 96 decks
+7% synergy
Timeless Lotus
12% of 25 decks
+11% synergy
Talisman of Conviction
11% of 93 decks
+6% synergy
Mana Crypt
9% of 1536 decks
-2% synergy
Sky Diamond
9% of 371 decks
+6% synergy
Jeweled Lotus
9% of 1446 decks
+1% synergy
Talisman of Curiosity
8% of 85 decks
+6% synergy
Throne of Eldraine
8% of 308 decks
+5% synergy
Mana Vault
8% of 1536 decks
+1% synergy
Fire Diamond
7% of 337 decks
+4% synergy
Caged Sun
7% of 1534 decks
+5% synergy
Everflowing Chalice
7% of 1534 decks
+2% synergy
Talisman of Unity
7% of 86 decks
+6% synergy
Selesnya Signet
7% of 86 decks
+5% synergy
Lotus Petal
6% of 1536 decks
-0% synergy
Chromatic Lantern
6% of 1532 decks
-3% synergy
Gilded Lotus
6% of 1536 decks
+2% synergy
Savai Crystal
6% of 89 decks
+5% synergy
Chrome Mox
6% of 1536 decks
-1% synergy
Talisman of Impulse
5% of 94 decks
+4% synergy
Nyx Lotus
5% of 1478 decks
+3% synergy
Indatha Crystal
5% of 78 decks
+5% synergy
Lands (50)
Command Tower
42% of 1534 decks
-31% synergy
Crumbling Necropolis
42% of 135 decks
+38% synergy
Sunken Hollow
39% of 368 decks
+30% synergy
Overgrown Tomb
38% of 324 decks
+29% synergy
Steam Vents
36% of 135 decks
+27% synergy
Llanowar Wastes
35% of 324 decks
+30% synergy
Smoldering Marsh
35% of 336 decks
+28% synergy
Watery Grave
32% of 371 decks
+22% synergy
Xander's Lounge
31% of 111 decks
+27% synergy
Drowned Catacomb
30% of 371 decks
+24% synergy
Sandsteppe Citadel
29% of 85 decks
+27% synergy
Golgari Rot Farm
29% of 324 decks
+26% synergy
Blood Crypt
29% of 337 decks
+20% synergy
Breeding Pool
28% of 88 decks
+19% synergy
Dragonskull Summit
28% of 337 decks
+22% synergy
Zagoth Triome
28% of 82 decks
+24% synergy
Savage Lands
28% of 94 decks
+25% synergy
Training Center
28% of 127 decks
+21% synergy
Caves of Koilos
27% of 241 decks
+21% synergy
Temple Garden
27% of 86 decks
+18% synergy
Stomping Ground
27% of 94 decks
+17% synergy
Woodland Cemetery
26% of 323 decks
+21% synergy
Dimir Aqueduct
26% of 371 decks
+22% synergy
Godless Shrine
26% of 241 decks
+17% synergy
Opulent Palace
26% of 88 decks
+23% synergy
Raffine's Tower
26% of 74 decks
+22% synergy
Indatha Triome
26% of 78 decks
+22% synergy
Orzhov Basilica
25% of 241 decks
+22% synergy
Hallowed Fountain
25% of 91 decks
+16% synergy
Ziatora's Proving Ground
25% of 72 decks
+21% synergy
Choked Estuary
25% of 368 decks
+21% synergy
Arcane Sanctum
24% of 91 decks
+21% synergy
Rakdos Carnarium
23% of 337 decks
+20% synergy
Foreboding Ruins
23% of 335 decks
+20% synergy
Undergrowth Stadium
23% of 303 decks
+17% synergy
Spara's Headquarters
23% of 39 decks
+19% synergy
Temple of Deceit
23% of 369 decks
+19% synergy
Sulfur Falls
23% of 135 decks
+17% synergy
Temple of Silence
23% of 240 decks
+19% synergy
Savai Triome
22% of 89 decks
+19% synergy
Isolated Chapel
22% of 241 decks
+16% synergy
Myriad Landscape
21% of 1525 decks
+0% synergy
Temple of Malady
21% of 321 decks
+18% synergy
Darkwater Catacombs
20% of 371 decks
+16% synergy
Nomad Outpost
20% of 96 decks
+17% synergy
Luxury Suite
20% of 333 decks
+13% synergy
Underground River
19% of 371 decks
+15% synergy
Dismal Backwater
19% of 369 decks
+17% synergy
Jungle Hollow
18% of 320 decks
+16% synergy
Tainted Wood
18% of 324 decks
+16% synergy