Breya, Etherium Shaper
Master Transmuter
Phyrexian Altar
Clock of Omens

   Prerequisites

What do I need to start this combo?
All permanents on the battlefield.
Master Transmuter does not have summoning sickness.
available

   Steps

How does this combo work?
1
Activate Master Transmuter by paying , tapping it and returning Breya from the battlefield to your hand, putting Breya onto the battlefield from your hand.
2
Breya enters the battlefield, creating two 1/1 Thopter artifact creature tokens.
3
Activate Clock of Omens by tapping the Thopters, untapping Master Transmuter.
4
Activate Phyrexian Altar by sacrificing a Thopter, adding .
5
Repeat.
6
Once you have infinite creature tokens and infinite colored mana, you may activate Breya's ability infinite times.

   Results

What do I get from this combo?
Infinite colored mana
Infinite damage
Infinite death triggers
Infinite ETB
Infinite lifegain
Infinite lifegain triggers
Infinite LTB
Infinite sacrifice triggers
Infinite tapped creature tokens
Reduce any number of target creatures' toughness to 0
Breya, Etherium Shaper
0.3%inclusion57 decks18.8K decks
High Synergy Cards
Ashnod's Altar
93%inclusion53 decks57 decks
70%synergy
Krark-Clan Ironworks
88%inclusion50 decks57 decks
69%synergy
Eldrazi Displacer
79%inclusion45 decks57 decks
67%synergy
Nim Deathmantle
79%inclusion45 decks57 decks
64%synergy
Sword of the Meek
79%inclusion45 decks57 decks
58%synergy
Thopter Foundry
79%inclusion45 decks57 decks
55%synergy
Fabricate
68%inclusion39 decks57 decks
49%synergy
Time Sieve
72%inclusion41 decks57 decks
45%synergy
Intruder Alarm
37%inclusion21 decks57 decks
36%synergy
Seat of the Synod
74%inclusion42 decks57 decks
35%synergy
Top Cards
Skullclamp
65%inclusion37 decks57 decks
35%synergy
Sai, Master Thopterist
63%inclusion36 decks57 decks
30%synergy
Etherium Sculptor
58%inclusion33 decks57 decks
25%synergy
Urza, Lord High Artificer
56%inclusion32 decks57 decks
31%synergy
Foundry Inspector
53%inclusion30 decks57 decks
27%synergy
Swords to Plowshares
51%inclusion29 decks57 decks
-6%synergy
Jhoira, Weatherlight Captain
49%inclusion28 decks57 decks
23%synergy
Counterspell
49%inclusion28 decks57 decks
23%synergy
Myr Battlesphere
46%inclusion26 decks57 decks
29%synergy
Emry, Lurker of the Loch
46%inclusion26 decks57 decks
18%synergy
Game Changers
Enlightened Tutor
54%inclusion31 decks57 decks
12%synergy
Demonic Tutor
42%inclusion24 decks57 decks
0%synergy
Smothering Tithe
42%inclusion24 decks57 decks
-2%synergy
Cyclonic Rift
39%inclusion22 decks57 decks
6%synergy
Vampiric Tutor
37%inclusion21 decks57 decks
-1%synergy
Bolas's Citadel
26%inclusion15 decks57 decks
18%synergy
Grim Monolith
11%inclusion6 decks57 decks
4%synergy
Teferi's Protection
8.8%inclusion5 decks57 decks
-1%synergy
Jeska's Will
8.8%inclusion5 decks57 decks
-5%synergy
Mishra's Workshop
7.0%inclusion4 decks57 decks
6%synergy
Creatures
Esper Sentinel
46%inclusion26 decks57 decks
-6%synergy
Marionette Apprentice
42%inclusion22 decks52 decks
21%synergy
Baleful Strix
42%inclusion24 decks57 decks
13%synergy
Goblin Welder
40%inclusion23 decks57 decks
25%synergy
Myr Retriever
39%inclusion22 decks57 decks
21%synergy
Padeem, Consul of Innovation
39%inclusion22 decks57 decks
16%synergy
Jan Jansen, Chaos Crafter
35%inclusion20 decks57 decks
18%synergy
Enthusiastic Mechanaut
35%inclusion20 decks57 decks
13%synergy
Scrap Trawler
33%inclusion19 decks57 decks
16%synergy
Marionette Master
32%inclusion18 decks57 decks
10%synergy
Phyrexian Metamorph
32%inclusion18 decks57 decks
8%synergy
Sharuum the Hegemon
30%inclusion17 decks57 decks
18%synergy
Reckless Fireweaver
28%inclusion16 decks57 decks
7%synergy
Forensic Gadgeteer
27%inclusion15 decks55 decks
9%synergy
Goblin Engineer
26%inclusion15 decks57 decks
13%synergy
Kuldotha Forgemaster
23%inclusion13 decks57 decks
17%synergy
Displacer Kitten
21%inclusion12 decks57 decks
11%synergy
Disciple of the Vault
21%inclusion12 decks57 decks
11%synergy
Crime Novelist
20%inclusion11 decks55 decks
13%synergy
Arcum Dagsson
19%inclusion11 decks57 decks
15%synergy
Tribute Mage
19%inclusion11 decks57 decks
15%synergy
Trinket Mage
19%inclusion11 decks57 decks
14%synergy
Mondrak, Glory Dominus
19%inclusion11 decks57 decks
14%synergy
Thought Monitor
19%inclusion11 decks57 decks
-4%synergy
Stridehangar Automaton
18%inclusion5 decks28 decks
4%synergy
Dross Scorpion
18%inclusion10 decks57 decks
17%synergy
Shimmer Myr
18%inclusion10 decks57 decks
9%synergy
Mirkwood Bats
18%inclusion10 decks57 decks
7%synergy
Solemn Simulacrum
18%inclusion10 decks57 decks
-6%synergy
Pitiless Plunderer
16%inclusion9 decks57 decks
13%synergy
Trophy Mage
16%inclusion9 decks57 decks
12%synergy
Urza, Prince of Kroog
14%inclusion8 decks57 decks
9%synergy
Thopter Assembly
14%inclusion8 decks57 decks
3%synergy
Dockside Extortionist
14%inclusion8 decks57 decks
2%synergy
Urza, Chief Artificer
14%inclusion8 decks57 decks
-1%synergy
Worldgorger Dragon
12%inclusion7 decks57 decks
12%synergy
The Reality Chip
12%inclusion7 decks57 decks
7%synergy
Oswald Fiddlebender
12%inclusion7 decks57 decks
6%synergy
Academy Manufactor
12%inclusion7 decks57 decks
1%synergy
Cayth, Famed Mechanist
12%inclusion6 decks52 decks
6%synergy
Auriok Salvagers
11%inclusion6 decks57 decks
8%synergy
Grand Architect
11%inclusion6 decks57 decks
7%synergy
Liberator, Urza's Battlethopter
11%inclusion6 decks57 decks
4%synergy
Ornithopter of Paradise
11%inclusion6 decks57 decks
-7%synergy
Zulaport Cutthroat
8.8%inclusion5 decks57 decks
8%synergy
Metalworker
8.8%inclusion5 decks57 decks
7%synergy
Ojer Taq, Deepest Foundation
8.8%inclusion5 decks57 decks
7%synergy
Deadeye Navigator
8.8%inclusion5 decks57 decks
6%synergy
Wurmcoil Engine
8.8%inclusion5 decks57 decks
1%synergy
Sharding Sphinx
8.8%inclusion5 decks57 decks
-3%synergy
Instants
Whir of Invention
42%inclusion24 decks57 decks
29%synergy
Path to Exile
37%inclusion21 decks57 decks
8%synergy
Dispatch
33%inclusion19 decks57 decks
9%synergy
Swan Song
33%inclusion19 decks57 decks
-4%synergy
An Offer You Can't Refuse
30%inclusion17 decks57 decks
-5%synergy
Fierce Guardianship
30%inclusion17 decks57 decks
-7%synergy
Mana Drain
19%inclusion11 decks57 decks
7%synergy
Force of Negation
19%inclusion11 decks57 decks
-10%synergy
Dramatic Reversal
18%inclusion10 decks57 decks
13%synergy
Negate
18%inclusion10 decks57 decks
8%synergy
Mystical Tutor
18%inclusion10 decks57 decks
-14%synergy
Force of Will
18%inclusion10 decks57 decks
-15%synergy
Deflecting Swat
16%inclusion9 decks57 decks
-17%synergy
Brainstorm
14%inclusion8 decks57 decks
7%synergy
Thirst for Knowledge
14%inclusion8 decks57 decks
6%synergy
Void Rend
14%inclusion8 decks57 decks
2%synergy
Pact of Negation
14%inclusion8 decks57 decks
-14%synergy
Dovin's Veto
12%inclusion7 decks57 decks
0%synergy
Anguished Unmaking
12%inclusion7 decks57 decks
0%synergy
Flusterstorm
12%inclusion7 decks57 decks
-18%synergy
Deadly Dispute
11%inclusion6 decks57 decks
2%synergy
Dark Ritual
11%inclusion6 decks57 decks
-23%synergy
Desynchronization
10%inclusion5 decks51 decks
4%synergy
Access Denied
8.8%inclusion5 decks57 decks
3%synergy
Chaos Warp
8.8%inclusion5 decks57 decks
1%synergy
Arcane Denial
8.8%inclusion5 decks57 decks
-2%synergy
Silence
8.8%inclusion5 decks57 decks
-23%synergy
Despark
7.0%inclusion4 decks57 decks
2%synergy
Strix Serenade
5.8%inclusion3 decks52 decks
2%synergy
Deadly Rollick
5.3%inclusion3 decks57 decks
-4%synergy
Tainted Pact
5.3%inclusion3 decks57 decks
-24%synergy
Sorceries
Thoughtcast
28%inclusion16 decks57 decks
10%synergy
Organic Extinction
19%inclusion11 decks57 decks
4%synergy
Diabolic Intent
19%inclusion11 decks57 decks
-7%synergy
Trash for Treasure
18%inclusion10 decks57 decks
10%synergy
Sevinne's Reclamation
18%inclusion10 decks57 decks
-17%synergy
Gamble
16%inclusion9 decks57 decks
-13%synergy
Reshape
14%inclusion8 decks57 decks
9%synergy
Toxic Deluge
14%inclusion8 decks57 decks
-3%synergy
One with the Machine
11%inclusion6 decks57 decks
7%synergy
Vandalblast
8.8%inclusion5 decks57 decks
2%synergy
Windfall
8.8%inclusion5 decks57 decks
-6%synergy
Wheel of Fortune
8.8%inclusion5 decks57 decks
-14%synergy
Imperial Seal
8.8%inclusion5 decks57 decks
-18%synergy
Transmute Artifact
7.0%inclusion4 decks57 decks
5%synergy
Reckless Handling
7.0%inclusion4 decks57 decks
5%synergy
Grim Tutor
7.0%inclusion4 decks57 decks
4%synergy
Vindicate
7.0%inclusion4 decks57 decks
4%synergy
Ponder
7.0%inclusion4 decks57 decks
3%synergy
Diabolic Tutor
5.3%inclusion3 decks57 decks
2%synergy
Scrap Mastery
5.3%inclusion3 decks57 decks
2%synergy
Faithless Looting
5.3%inclusion3 decks57 decks
1%synergy
Supreme Verdict
5.3%inclusion3 decks57 decks
-1%synergy
Wake the Past
5.3%inclusion3 decks57 decks
-2%synergy
Utility Artifacts
Mystic Forge
42%inclusion24 decks57 decks
26%synergy
Sensei's Divining Top
37%inclusion21 decks57 decks
24%synergy
Unwinding Clock
37%inclusion21 decks57 decks
17%synergy
Darksteel Forge
28%inclusion16 decks57 decks
19%synergy
Mycosynth Lattice
26%inclusion15 decks57 decks
21%synergy
Sculpting Steel
26%inclusion15 decks57 decks
14%synergy
Panharmonicon
25%inclusion14 decks57 decks
14%synergy
Aetherflux Reservoir
21%inclusion12 decks57 decks
16%synergy
The One Ring
19%inclusion11 decks57 decks
-6%synergy
Isochron Scepter
16%inclusion9 decks57 decks
11%synergy
Lightning Greaves
16%inclusion9 decks57 decks
3%synergy
Simulacrum Synthesizer
15%inclusion8 decks54 decks
7%synergy
Staff of Domination
14%inclusion8 decks57 decks
13%synergy
Cloud Key
14%inclusion8 decks57 decks
9%synergy
Wishclaw Talisman
14%inclusion8 decks57 decks
-19%synergy
Repurposing Bay
14%inclusion4 decks29 decks
9%synergy
Encroaching Mycosynth
12%inclusion7 decks57 decks
8%synergy
Conjurer's Closet
12%inclusion7 decks57 decks
3%synergy
Swiftfoot Boots
12%inclusion7 decks57 decks
1%synergy
Myr Turbine
11%inclusion6 decks57 decks
10%synergy
Rings of Brighthearth
11%inclusion6 decks57 decks
8%synergy
Grinding Station
11%inclusion6 decks57 decks
5%synergy
Thornbite Staff
8.8%inclusion5 decks57 decks
9%synergy
Forsaken Monument
8.8%inclusion5 decks57 decks
8%synergy
Trading Post
8.8%inclusion5 decks57 decks
4%synergy
Retrofitter Foundry
8.8%inclusion5 decks57 decks
3%synergy
Ichor Wellspring
8.8%inclusion5 decks57 decks
-8%synergy
Liquimetal Coating
7.0%inclusion4 decks57 decks
6%synergy
Vedalken Orrery
7.0%inclusion4 decks57 decks
5%synergy
Spine of Ish Sah
7.0%inclusion4 decks57 decks
4%synergy
Darksteel Monolith
5.3%inclusion3 decks57 decks
5%synergy
Altar of Dementia
5.3%inclusion3 decks57 decks
5%synergy
Tormod's Crypt
5.3%inclusion3 decks57 decks
4%synergy
Mirage Mirror
5.3%inclusion3 decks57 decks
4%synergy
Manifold Key
5.3%inclusion3 decks57 decks
3%synergy
Nevinyrral's Disk
5.3%inclusion3 decks57 decks
3%synergy
Portal to Phyrexia
5.3%inclusion3 decks57 decks
3%synergy
Moonsilver Key
5.3%inclusion3 decks57 decks
2%synergy
Mishra's Bauble
5.3%inclusion3 decks57 decks
1%synergy
Shorikai, Genesis Engine
5.3%inclusion3 decks57 decks
0%synergy
Wayfarer's Bauble
5.3%inclusion3 decks57 decks
-2%synergy
Thopter Shop
5.3%inclusion3 decks57 decks
-2%synergy
Thousand Moons Smithy
5.3%inclusion3 decks57 decks
-4%synergy
Cranial Plating
5.3%inclusion3 decks57 decks
-7%synergy
Enchantments
Thopter Spy Network
39%inclusion22 decks57 decks
11%synergy
Rhystic Study
37%inclusion21 decks57 decks
-7%synergy
Anointed Procession
25%inclusion14 decks57 decks
17%synergy
Mirrodin Besieged
18%inclusion10 decks57 decks
7%synergy
Mechanized Production
18%inclusion10 decks57 decks
3%synergy
Efficient Construction
18%inclusion10 decks57 decks
2%synergy
Mystic Remora
18%inclusion10 decks57 decks
-21%synergy
Storm the Vault
16%inclusion9 decks57 decks
0%synergy
Necromancy
12%inclusion7 decks57 decks
12%synergy
Impact Tremors
12%inclusion7 decks57 decks
7%synergy
Underworld Breach
12%inclusion7 decks57 decks
-19%synergy
Animate Dead
11%inclusion6 decks57 decks
8%synergy
Necropotence
8.8%inclusion5 decks57 decks
-11%synergy
Biotransference
7.0%inclusion4 decks57 decks
4%synergy
Teleportation Circle
7.0%inclusion4 decks57 decks
-1%synergy
Dance of the Dead
5.3%inclusion3 decks57 decks
5%synergy
Training Grounds
5.3%inclusion3 decks57 decks
4%synergy
Phyrexian Arena
5.3%inclusion3 decks57 decks
3%synergy
Revel in Riches
5.3%inclusion3 decks57 decks
2%synergy
Planeswalkers
Tezzeret the Seeker
23%inclusion13 decks57 decks
14%synergy
Tezzeret, Master of the Bridge
21%inclusion12 decks57 decks
3%synergy
Saheeli, Sublime Artificer
14%inclusion8 decks57 decks
5%synergy
Daretti, Scrap Savant
12%inclusion7 decks57 decks
-2%synergy
Tezzeret, Betrayer of Flesh
11%inclusion6 decks57 decks
3%synergy
Karn, the Great Creator
8.8%inclusion5 decks57 decks
6%synergy
Tezzeret, Artifice Master
7.0%inclusion4 decks57 decks
0%synergy
Saheeli Rai
5.3%inclusion3 decks57 decks
3%synergy
Tezzeret, Agent of Bolas
5.3%inclusion3 decks57 decks
3%synergy
Utility Lands
Vault of Whispers
67%inclusion38 decks57 decks
32%synergy
Great Furnace
67%inclusion38 decks57 decks
32%synergy
Ancient Den
65%inclusion37 decks57 decks
30%synergy
Darksteel Citadel
58%inclusion33 decks57 decks
35%synergy
Inventors' Fair
47%inclusion27 decks57 decks
26%synergy
Academy Ruins
39%inclusion22 decks57 decks
19%synergy
Reliquary Tower
32%inclusion18 decks57 decks
15%synergy
Buried Ruin
32%inclusion18 decks57 decks
15%synergy
Urza's Saga
28%inclusion16 decks57 decks
10%synergy
Ancient Tomb
25%inclusion14 decks57 decks
-8%synergy
Otawara, Soaring City
23%inclusion13 decks57 decks
-9%synergy
Fomori Vault
19%inclusion10 decks54 decks
13%synergy
Urborg, Tomb of Yawgmoth
16%inclusion9 decks57 decks
12%synergy
Treasure Vault
14%inclusion8 decks57 decks
7%synergy
Archway of Innovation
12%inclusion6 decks52 decks
-1%synergy
Bojuka Bog
11%inclusion6 decks57 decks
3%synergy
Temple of the False God
8.8%inclusion5 decks57 decks
4%synergy
Urza's Mine
7.0%inclusion4 decks57 decks
5%synergy
Urza's Power Plant
7.0%inclusion4 decks57 decks
5%synergy
Urza's Tower
7.0%inclusion4 decks57 decks
5%synergy
Fountainport
6.0%inclusion3 decks50 decks
5%synergy
Tolaria West
5.3%inclusion3 decks57 decks
5%synergy
Mana Artifacts
Sol Ring
98%inclusion56 decks57 decks
7%synergy
Arcane Signet
91%inclusion52 decks57 decks
4%synergy
Mox Opal
47%inclusion27 decks57 decks
9%synergy
Fellwar Stone
44%inclusion25 decks57 decks
-14%synergy
Talisman of Creativity
32%inclusion18 decks57 decks
7%synergy
Chromatic Lantern
30%inclusion17 decks57 decks
3%synergy
Basalt Monolith
26%inclusion15 decks57 decks
20%synergy
Talisman of Dominance
26%inclusion15 decks57 decks
-9%synergy
Lotus Petal
26%inclusion15 decks57 decks
-10%synergy
Talisman of Progress
25%inclusion14 decks57 decks
-6%synergy
Chrome Mox
25%inclusion14 decks57 decks
-8%synergy
Mana Vault
25%inclusion14 decks57 decks
-9%synergy
Dimir Signet
23%inclusion13 decks57 decks
6%synergy
Izzet Signet
21%inclusion12 decks57 decks
4%synergy
Azorius Signet
21%inclusion12 decks57 decks
2%synergy
Thought Vessel
19%inclusion11 decks57 decks
9%synergy
Talisman of Hierarchy
18%inclusion10 decks57 decks
1%synergy
Talisman of Conviction
16%inclusion9 decks57 decks
0%synergy
Talisman of Indulgence
14%inclusion8 decks57 decks
-2%synergy
Lion's Eye Diamond
14%inclusion8 decks57 decks
-14%synergy
Crystal Skull, Isu Spyglass
14%inclusion7 decks51 decks
8%synergy
Chromatic Orrery
12%inclusion7 decks57 decks
9%synergy
Thran Dynamo
12%inclusion7 decks57 decks
7%synergy
Mana Crypt
12%inclusion7 decks57 decks
1%synergy
Mox Amber
12%inclusion7 decks57 decks
-7%synergy
Liquimetal Torque
11%inclusion6 decks57 decks
6%synergy
Orzhov Signet
11%inclusion6 decks57 decks
-3%synergy
Mind Stone
8.8%inclusion5 decks57 decks
2%synergy
Commander's Sphere
8.8%inclusion5 decks57 decks
-6%synergy
Mox Diamond
8.8%inclusion5 decks57 decks
-19%synergy
Boros Signet
7.0%inclusion4 decks57 decks
-3%synergy
Rakdos Signet
7.0%inclusion4 decks57 decks
-4%synergy
Prismatic Lens
5.3%inclusion3 decks57 decks
5%synergy
Blinkmoth Urn
5.3%inclusion3 decks57 decks
3%synergy
Gilded Lotus
5.3%inclusion3 decks57 decks
1%synergy
The Mightstone and Weakstone
5.3%inclusion3 decks57 decks
0%synergy
Lands
Command Tower
88%inclusion50 decks57 decks
-5%synergy
Steam Vents
65%inclusion37 decks57 decks
25%synergy
Hallowed Fountain
65%inclusion37 decks57 decks
14%synergy
Watery Grave
65%inclusion37 decks57 decks
9%synergy
Flooded Strand
61%inclusion35 decks57 decks
9%synergy
Spire of Industry
54%inclusion31 decks57 decks
8%synergy
Scalding Tarn
53%inclusion30 decks57 decks
2%synergy
Polluted Delta
53%inclusion30 decks57 decks
1%synergy
Exotic Orchard
53%inclusion30 decks57 decks
-18%synergy
Godless Shrine
49%inclusion28 decks57 decks
12%synergy
Marsh Flats
47%inclusion27 decks57 decks
-3%synergy
Blood Crypt
46%inclusion26 decks57 decks
9%synergy
Bloodstained Mire
42%inclusion24 decks57 decks
-7%synergy
Sacred Foundry
39%inclusion22 decks57 decks
6%synergy
Arid Mesa
39%inclusion22 decks57 decks
-11%synergy
Raugrin Triome
37%inclusion21 decks57 decks
17%synergy
Silverbluff Bridge
33%inclusion19 decks57 decks
7%synergy
Mistvault Bridge
30%inclusion17 decks57 decks
4%synergy
Xander's Lounge
28%inclusion16 decks57 decks
8%synergy
Raffine's Tower
28%inclusion16 decks57 decks
7%synergy
Drossforge Bridge
28%inclusion16 decks57 decks
6%synergy
Goldmire Bridge
28%inclusion16 decks57 decks
4%synergy
Mana Confluence
28%inclusion16 decks57 decks
-10%synergy
Rustvale Bridge
26%inclusion15 decks57 decks
4%synergy
Morphic Pool
26%inclusion15 decks57 decks
3%synergy
Razortide Bridge
26%inclusion15 decks57 decks
0%synergy
City of Brass
26%inclusion15 decks57 decks
-13%synergy
Glimmervoid
25%inclusion14 decks57 decks
12%synergy
Savai Triome
25%inclusion14 decks57 decks
9%synergy
Sea of Clouds
23%inclusion13 decks57 decks
3%synergy
Luxury Suite
21%inclusion12 decks57 decks
8%synergy
Training Center
19%inclusion11 decks57 decks
3%synergy
Misty Rainforest
18%inclusion10 decks57 decks
-13%synergy
Spectator Seating
16%inclusion9 decks57 decks
4%synergy
Shivan Reef
16%inclusion9 decks57 decks
3%synergy
Vault of Champions
16%inclusion9 decks57 decks
3%synergy
Arcane Sanctum
14%inclusion8 decks57 decks
-5%synergy
Volcanic Island
14%inclusion8 decks57 decks
-19%synergy
Tundra
14%inclusion8 decks57 decks
-19%synergy
Underground Sea
14%inclusion8 decks57 decks
-19%synergy
The Mycosynth Gardens
12%inclusion7 decks57 decks
6%synergy
Underground River
12%inclusion7 decks57 decks
3%synergy
Mystic Monastery
12%inclusion7 decks57 decks
-6%synergy
Windswept Heath
12%inclusion7 decks57 decks
-14%synergy
Plateau
12%inclusion7 decks57 decks
-19%synergy
Scrubland
12%inclusion7 decks57 decks
-20%synergy
Badlands
12%inclusion7 decks57 decks
-20%synergy
Power Depot
11%inclusion6 decks57 decks
3%synergy
Adarkar Wastes
11%inclusion6 decks57 decks
1%synergy
Nomad Outpost
11%inclusion6 decks57 decks
-4%synergy