Dong Zhou, the Tyrant (Card)
Dong Zhou, the Tyrant
In 383 decks
0.01% of 3154690 decks
Terra, Herald of Hope
0.10% of 4783 decks
5 decks
Top Commanders
Sliver Queen
2.53% of 1658 decks
42 decks
Jodah, the Unifier
0.11% of 23303 decks
25 decks
Norin the Wary
0.43% of 5101 decks
22 decks
Kenrith, the Returned King
0.04% of 25512 decks
10 decks
Lu Bu, Master-at-Arms
8.82% of 102 decks
9 decks
Esika, God of the Tree
0.04% of 20343 decks
9 decks
Diaochan, Artful Beauty
1.79% of 335 decks
6 decks
Duke Ulder Ravengard
0.40% of 1517 decks
6 decks
Garth One-Eye
0.13% of 4455 decks
6 decks
Sisay, Weatherlight Captain
0.04% of 14211 decks
6 decks
Ilharg, the Raze-Boar
0.44% of 1147 decks
5 decks
Tariel, Reckoner of Souls
0.41% of 1221 decks
5 decks
Cadric, Soul Kindler
0.38% of 1303 decks
5 decks
Rionya, Fire Dancer
0.17% of 2934 decks
5 decks
The Jolly Balloon Man
0.07% of 7447 decks
5 decks
Queen Marchesa
0.03% of 14306 decks
5 decks
Shaun, Father of Synths
0.62% of 648 decks
4 decks
Zinnia, Valley's Voice
0.04% of 11366 decks
4 decks
Gwendlyn Di Corci
1.09% of 276 decks
3 decks
New Cards
Seam Rip
25% of 4 decks
+25% synergy
Dauntless Scrapbot
19% of 16 decks
+19% synergy
Exalted Sunborn
14% of 14 decks
+14% synergy
Drill Too Deep
14% of 7 decks
+14% synergy
Zookeeper Mechan
14% of 7 decks
+14% synergy
High Synergy Cards
Xiahou Dun, the One-Eyed
45% of 194 decks
+45% synergy
Zhang Fei, Fierce Warrior
45% of 219 decks
+45% synergy
Lady Sun
45% of 161 decks
+45% synergy
Riding the Dilu Horse
43% of 154 decks
+43% synergy
Angus Mackenzie
41% of 122 decks
+41% synergy
Lady Zhurong, Warrior Queen
41% of 154 decks
+41% synergy
Sun Ce, Young Conquerer
38% of 161 decks
+38% synergy
Sun Quan, Lord of Wu
37% of 161 decks
+37% synergy
Three Visits
37% of 154 decks
+37% synergy
Gwendlyn Di Corci
37% of 133 decks
+37% synergy
Top Cards
Hazezon Tamar
37% of 136 decks
+37% synergy
Lu Xun, Scholar General
35% of 161 decks
+35% synergy
Rasputin Dreamweaver
34% of 140 decks
+34% synergy
Swords to Plowshares
34% of 219 decks
+34% synergy
Zhang He, Wei General
32% of 194 decks
+32% synergy
Cao Ren, Wei Commander
32% of 194 decks
+32% synergy
Eureka
32% of 154 decks
+32% synergy
Transmute Artifact
32% of 161 decks
+32% synergy
Gilded Drake
32% of 161 decks
+32% synergy
Living Plane
31% of 154 decks
+31% synergy
Game Changers
Gaea's Cradle
39% of 154 decks
+39% synergy
Imperial Seal
32% of 194 decks
+32% synergy
Survival of the Fittest
30% of 154 decks
+30% synergy
Intuition
28% of 161 decks
+28% synergy
Serra's Sanctum
23% of 219 decks
+23% synergy
Demonic Tutor
23% of 194 decks
+23% synergy
Teferi's Protection
20% of 219 decks
+20% synergy
Ancient Tomb
20% of 383 decks
+20% synergy
Smothering Tithe
20% of 219 decks
+20% synergy
Rhystic Study
18% of 161 decks
+18% synergy
Creatures
Old Man of the Sea
31% of 161 decks
+31% synergy
Zhao Zilong, Tiger General
31% of 219 decks
+31% synergy
Lu Meng, Wu General
30% of 161 decks
+30% synergy
Serendib Djinn
30% of 161 decks
+30% synergy
Hua Tuo, Honored Physician
28% of 154 decks
+28% synergy
Guan Yu, Sainted Warrior
27% of 219 decks
+27% synergy
Ifh-Bíff Efreet
26% of 154 decks
+26% synergy
Liu Bei, Lord of Shu
26% of 219 decks
+26% synergy
Singing Tree
25% of 154 decks
+25% synergy
Guardian Beast
25% of 194 decks
+25% synergy
Juzám Djinn
25% of 194 decks
+25% synergy
Solemn Simulacrum
25% of 383 decks
+25% synergy
Yuan Shao, the Indecisive
25% of 383 decks
+25% synergy
Cao Cao, Lord of Wei
25% of 194 decks
+25% synergy
Kongming, "Sleeping Dragon"
22% of 219 decks
+22% synergy
Lu Su, Wu Advisor
22% of 161 decks
+22% synergy
Zhang Liao, Hero of Hefei
21% of 194 decks
+21% synergy
Meng Huo, Barbarian King
21% of 154 decks
+21% synergy
Imperial Recruiter
21% of 383 decks
+21% synergy
King Suleiman
21% of 219 decks
+21% synergy
Zhuge Jin, Wu Strategist
20% of 161 decks
+20% synergy
Wolf Pack
20% of 154 decks
+20% synergy
Huang Zhong, Shu General
20% of 219 decks
+20% synergy
Zuo Ci, the Mocking Sage
19% of 154 decks
+19% synergy
Lu Bu, Master-at-Arms
19% of 383 decks
+19% synergy
Birds of Paradise
19% of 154 decks
+19% synergy
Thunder Spirit
19% of 219 decks
+19% synergy
Zhou Yu, Chief Commander
19% of 161 decks
+19% synergy
Xun Yu, Wei Advisor
19% of 194 decks
+19% synergy
Argivian Archaeologist
18% of 219 decks
+18% synergy
Adun Oakenshield
17% of 132 decks
+17% synergy
Purphoros, God of the Forge
17% of 383 decks
+17% synergy
Tetsuo Umezawa
17% of 133 decks
+17% synergy
Diaochan, Artful Beauty
16% of 383 decks
+16% synergy
Zodiac Dragon
16% of 383 decks
+16% synergy
Ali from Cairo
16% of 383 decks
+16% synergy
Pang Tong, "Young Phoenix"
16% of 219 decks
+16% synergy
Khabál Ghoul
14% of 194 decks
+14% synergy
Sima Yi, Wei Field Marshal
14% of 194 decks
+14% synergy
Ma Chao, Western Warrior
14% of 383 decks
+14% synergy
Slagdrill Scrapper
14% of 7 decks
+14% synergy
Esper Sentinel
14% of 219 decks
+14% synergy
Etali, Primal Storm
13% of 383 decks
+13% synergy
Wu Scout
13% of 161 decks
+13% synergy
Loyal Retainers
13% of 219 decks
+13% synergy
Combustible Gearhulk
13% of 383 decks
+13% synergy
Starfield Vocalist
12% of 8 decks
+12% synergy
Lightstall Inquisitor
12% of 8 decks
+12% synergy
Wu Light Cavalry
12% of 161 decks
+12% synergy
Wei Night Raiders
12% of 194 decks
+12% synergy
Instants
Chaos Warp
26% of 383 decks
+26% synergy
Path to Exile
24% of 219 decks
+24% synergy
Word of Command
23% of 194 decks
+23% synergy
Counterspell
20% of 161 decks
+20% synergy
Heroic Intervention
19% of 154 decks
+19% synergy
Mana Drain
19% of 161 decks
+19% synergy
Vampiric Tutor
18% of 194 decks
+18% synergy
Deflecting Swat
17% of 383 decks
+17% synergy
Cyclonic Rift
17% of 161 decks
+17% synergy
Force of Will
14% of 161 decks
+14% synergy
Fierce Guardianship
13% of 161 decks
+13% synergy
Natural Selection
13% of 154 decks
+13% synergy
Generous Gift
12% of 219 decks
+12% synergy
Lightning Bolt
12% of 383 decks
+12% synergy
Boros Charm
12% of 219 decks
+12% synergy
Beast Within
12% of 154 decks
+12% synergy
Heavy Fog
11% of 154 decks
+11% synergy
Rakdos Charm
11% of 194 decks
+11% synergy
Enlightened Tutor
11% of 219 decks
+10% synergy
Deflecting Palm
11% of 219 decks
+10% synergy
Mystic Denial
10% of 161 decks
+10% synergy
Backlash
10% of 194 decks
+10% synergy
Ephemerate
10% of 219 decks
+10% synergy
Preemptive Strike
9% of 161 decks
+9% synergy
Blaze of Glory
9% of 219 decks
+9% synergy
Dark Ritual
9% of 194 decks
+9% synergy
Reroute Systems
8% of 12 decks
+8% synergy
Lithobraking
8% of 12 decks
+8% synergy
Seething Song
8% of 383 decks
+8% synergy
Champion's Victory
8% of 161 decks
+8% synergy
Delirium
8% of 194 decks
+8% synergy
Big Score
8% of 383 decks
+8% synergy
Valakut Awakening
8% of 383 decks
+8% synergy
Arcane Denial
7% of 161 decks
+7% synergy
Negate
7% of 161 decks
+7% synergy
Flawless Maneuver
7% of 219 decks
+7% synergy
Inkshield
7% of 152 decks
+7% synergy
Abrade
7% of 383 decks
+7% synergy
Untimely Malfunction
7% of 245 decks
+7% synergy
Rally the Troops
7% of 219 decks
+7% synergy
Extinguish
7% of 161 decks
+7% synergy
Brainstorm
7% of 161 decks
+7% synergy
Deadly Rollick
7% of 194 decks
+7% synergy
Cut Propulsion
7% of 15 decks
+7% synergy
Cloudshift
6% of 219 decks
+6% synergy
Unexpected Windfall
6% of 383 decks
+6% synergy
Red Elemental Blast
6% of 383 decks
+6% synergy
Boros Fury-Shield
6% of 219 decks
+6% synergy
Crackling Doom
6% of 152 decks
+6% synergy
Akroma's Will
5% of 219 decks
+5% synergy
Sorceries
Blasphemous Act
26% of 383 decks
+26% synergy
All Hallow's Eve
25% of 194 decks
+25% synergy
Yawgmoth's Will
25% of 194 decks
+25% synergy
Timetwister
25% of 161 decks
+25% synergy
Capture of Jingzhou
25% of 161 decks
+25% synergy
Borrowing 100,000 Arrows
22% of 161 decks
+22% synergy
Wheel of Fortune
21% of 383 decks
+21% synergy
Time Spiral
21% of 161 decks
+21% synergy
Nature's Lore
21% of 154 decks
+21% synergy
Farseek
20% of 154 decks
+20% synergy
Overwhelming Forces
20% of 194 decks
+20% synergy
Hellfire
15% of 194 decks
+15% synergy
Spoils of Victory
15% of 154 decks
+15% synergy
Acid Rain
14% of 161 decks
+14% synergy
Return to Battle
14% of 194 decks
+14% synergy
Jeska's Will
14% of 383 decks
+14% synergy
Cultivate
14% of 154 decks
+14% synergy
Vandalblast
14% of 383 decks
+14% synergy
Rolling Earthquake
13% of 383 decks
+13% synergy
Ravages of War
13% of 219 decks
+13% synergy
Balance of Power
12% of 161 decks
+12% synergy
Strategic Planning
12% of 161 decks
+12% synergy
Broken Dam
12% of 161 decks
+12% synergy
False Defeat
11% of 219 decks
+11% synergy
Relentless Assault
11% of 383 decks
+11% synergy
Ambition's Cost
11% of 194 decks
+11% synergy
Faithless Looting
11% of 383 decks
+11% synergy
Brilliant Plan
11% of 161 decks
+11% synergy
False Mourning
10% of 154 decks
+10% synergy
Rampant Growth
10% of 154 decks
+10% synergy
Guan Yu's 1,000-Li March
10% of 219 decks
+10% synergy
Primevals' Glorious Rebirth
9% of 152 decks
+9% synergy
Urza's Ruinous Blast
9% of 219 decks
+9% synergy
Exhaustion
9% of 161 decks
+9% synergy
Empty City Ruse
9% of 219 decks
+9% synergy
Farewell
9% of 219 decks
+9% synergy
Kodama's Reach
8% of 154 decks
+8% synergy
Replenish
8% of 219 decks
+8% synergy
Skyshroud Claim
8% of 154 decks
+8% synergy
Riding Red Hare
8% of 219 decks
+8% synergy
Mana Geyser
7% of 383 decks
+7% synergy
Marshaling the Troops
7% of 154 decks
+7% synergy
Warrior's Oath
7% of 383 decks
+7% synergy
Peach Garden Oath
7% of 219 decks
+7% synergy
Sage's Knowledge
7% of 161 decks
+7% synergy
Blaze
7% of 383 decks
+7% synergy
Toxic Deluge
7% of 194 decks
+7% synergy
Reanimate
7% of 194 decks
+7% synergy
Devastating Onslaught
7% of 15 decks
+7% synergy
Ruinous Ultimatum
7% of 152 decks
+7% synergy
Utility Artifacts
Ruby Medallion
21% of 383 decks
+21% synergy
Lightning Greaves
19% of 383 decks
+19% synergy
Gauntlet of Might
17% of 383 decks
+17% synergy
Swiftfoot Boots
16% of 383 decks
+16% synergy
Panharmonicon
16% of 383 decks
+16% synergy
Forcefield
14% of 383 decks
+14% synergy
Mirror Universe
14% of 383 decks
+14% synergy
Candelabra of Tawnos
14% of 383 decks
+14% synergy
City in a Bottle
13% of 383 decks
+13% synergy
Helm of the Host
11% of 383 decks
+11% synergy
Conjurer's Closet
11% of 383 decks
+11% synergy
Illusionary Mask
11% of 383 decks
+11% synergy
Skullclamp
11% of 383 decks
+11% synergy
Tawnos's Coffin
10% of 383 decks
+10% synergy
Mithril Coat
10% of 383 decks
+10% synergy
The One Ring
9% of 383 decks
+9% synergy
Ring of Ma'rûf
8% of 383 decks
+8% synergy
Pinnacle Kill-Ship
8% of 12 decks
+8% synergy
Cyclopean Tomb
8% of 383 decks
+8% synergy
Wayfarer's Bauble
7% of 383 decks
+7% synergy
Pyramids
7% of 383 decks
+7% synergy
Idol of Oblivion
6% of 383 decks
+6% synergy
Melded Moxite
6% of 16 decks
+6% synergy
The Great Henge
6% of 154 decks
+6% synergy
Sword of the Animist
6% of 383 decks
+6% synergy
Sword of Hearth and Home
5% of 383 decks
+5% synergy
Tome of Legends
5% of 383 decks
+5% synergy
Sword of Feast and Famine
5% of 383 decks
+5% synergy
Hazoret's Monument
5% of 383 decks
+5% synergy
Genesis Chamber
5% of 383 decks
+5% synergy
Heroes' Podium
5% of 383 decks
+5% synergy
Buster Sword
5% of 58 decks
+5% synergy
Enchantments
Power Artifact
31% of 161 decks
+31% synergy
Drop of Honey
30% of 154 decks
+30% synergy
The Abyss
27% of 194 decks
+27% synergy
Chains of Mephistopheles
26% of 194 decks
+26% synergy
Land Equilibrium
25% of 161 decks
+25% synergy
Nether Void
25% of 194 decks
+25% synergy
In the Eye of Chaos
24% of 161 decks
+24% synergy
Moat
22% of 219 decks
+22% synergy
Field of Dreams
22% of 161 decks
+22% synergy
Earthcraft
21% of 154 decks
+21% synergy
Lich
21% of 194 decks
+21% synergy
Divine Intervention
18% of 219 decks
+18% synergy
Raging River
12% of 383 decks
+12% synergy
Impact Tremors
12% of 383 decks
+12% synergy
Flowering of the White Tree
11% of 219 decks
+10% synergy
Land Tax
10% of 219 decks
+10% synergy
Anointed Procession
9% of 219 decks
+9% synergy
Phyrexian Arena
8% of 194 decks
+8% synergy
Blood Moon
8% of 383 decks
+8% synergy
Fiery Emancipation
8% of 383 decks
+8% synergy
Sylvan Library
8% of 154 decks
+8% synergy
Warstorm Surge
7% of 383 decks
+7% synergy
Sneak Attack
7% of 383 decks
+7% synergy
Goblin Bombardment
6% of 383 decks
+6% synergy
Flameshadow Conjuring
6% of 383 decks
+6% synergy
Mirror March
6% of 383 decks
+6% synergy
Vraska Joins Up
6% of 99 decks
+6% synergy
Trouble in Pairs
6% of 185 decks
+6% synergy
Teleportation Circle
6% of 219 decks
+6% synergy
Doubling Season
6% of 154 decks
+6% synergy
Guardian Project
6% of 154 decks
+6% synergy
Confusion in the Ranks
6% of 383 decks
+6% synergy
Sidequest: Card Collection
6% of 18 decks
+6% synergy
Rising of the Day
5% of 383 decks
+5% synergy
Ghostly Prison
5% of 219 decks
+5% synergy
Nahiri's Resolve
5% of 219 decks
+5% synergy
Utility Lands
Volrath's Stronghold
18% of 194 decks
+18% synergy
Boseiju, Who Endures
17% of 154 decks
+17% synergy
Island of Wak-Wak
15% of 383 decks
+15% synergy
Bazaar of Baghdad
14% of 383 decks
+14% synergy
Reliquary Tower
14% of 383 decks
+14% synergy
Elephant Graveyard
14% of 383 decks
+14% synergy
Diamond Valley
13% of 383 decks
+13% synergy
Mishra's Workshop
13% of 383 decks
+13% synergy
Rogue's Passage
13% of 383 decks
+13% synergy
Minamo, School at Water's Edge
13% of 161 decks
+13% synergy
The Tabernacle at Pendrell Vale
13% of 383 decks
+13% synergy
City of Traitors
13% of 383 decks
+13% synergy
Valakut, the Molten Pinnacle
13% of 383 decks
+13% synergy
Nykthos, Shrine to Nyx
13% of 383 decks
+13% synergy
Uthros, Titanic Godcore
12% of 8 decks
+12% synergy
Eiganjo, Seat of the Empire
12% of 219 decks
+12% synergy
Bojuka Bog
12% of 194 decks
+12% synergy
Lake of the Dead
11% of 194 decks
+11% synergy
Arena of Glory
10% of 278 decks
+10% synergy
Yavimaya Hollow
10% of 154 decks
+10% synergy
Urborg, Tomb of Yawgmoth
10% of 383 decks
+10% synergy
Temple of the False God
9% of 383 decks
+9% synergy
War Room
9% of 383 decks
+9% synergy
Spinerock Knoll
8% of 383 decks
+8% synergy
Balamb Garden, SeeD Academy
8% of 12 decks
+8% synergy
Takenuma, Abandoned Mire
8% of 194 decks
+8% synergy
Minas Tirith
8% of 219 decks
+8% synergy
Shizo, Death's Storehouse
8% of 194 decks
+8% synergy
Shinka, the Bloodsoaked Keep
7% of 383 decks
+7% synergy
Kher Keep
7% of 383 decks
+7% synergy
Adagia, Windswept Bastion
7% of 14 decks
+7% synergy
Otawara, Soaring City
7% of 161 decks
+7% synergy
Sokenzan, Crucible of Defiance
7% of 383 decks
+7% synergy
Command Beacon
7% of 383 decks
+7% synergy
Dwarven Mine
6% of 383 decks
+6% synergy
Forgotten Cave
6% of 383 decks
+6% synergy
Eiganjo Castle
6% of 219 decks
+6% synergy
Urza's Saga
6% of 383 decks
+6% synergy
Maze of Ith
5% of 383 decks
+5% synergy
Mana Artifacts
Sol Ring
69% of 383 decks
+69% synergy
Arcane Signet
48% of 383 decks
+48% synergy
Fellwar Stone
18% of 383 decks
+18% synergy
Mox Diamond
16% of 383 decks
+16% synergy
Chromatic Lantern
15% of 383 decks
+15% synergy
Grim Monolith
15% of 383 decks
+15% synergy
Boros Signet
14% of 219 decks
+14% synergy
Lion's Eye Diamond
13% of 383 decks
+13% synergy
Timeless Lotus
13% of 122 decks
+13% synergy
Mind Stone
13% of 383 decks
+13% synergy
Talisman of Conviction
13% of 219 decks
+13% synergy
Cursed Mirror
12% of 383 decks
+12% synergy
Mana Crypt
11% of 383 decks
+11% synergy
Chrome Mox
10% of 383 decks
+10% synergy
Azorius Signet
9% of 140 decks
+9% synergy
Talisman of Indulgence
9% of 194 decks
+9% synergy
Izzet Signet
9% of 161 decks
+9% synergy
Mana Vault
8% of 383 decks
+8% synergy
Fire Diamond
8% of 383 decks
+8% synergy
Commander's Sphere
8% of 383 decks
+8% synergy
Mox Amber
8% of 383 decks
+8% synergy
Thought Vessel
8% of 383 decks
+8% synergy
Mox Opal
7% of 383 decks
+7% synergy
Rakdos Signet
7% of 194 decks
+7% synergy
Extraplanar Lens
7% of 383 decks
+7% synergy
Relic of Legends
7% of 383 decks
+7% synergy
Jeweled Lotus
7% of 383 decks
+7% synergy
Gilded Lotus
7% of 383 decks
+7% synergy
Gauntlet of Power
6% of 383 decks
+6% synergy
Honor-Worn Shaku
6% of 383 decks
+6% synergy
Talisman of Progress
6% of 140 decks
+6% synergy
Thran Dynamo
5% of 383 decks
+5% synergy
Throne of Eldraine
5% of 376 decks
+5% synergy
Lands
Tropical Island
60% of 124 decks
+60% synergy
Underground Sea
58% of 133 decks
+58% synergy
Bayou
58% of 132 decks
+58% synergy
Savannah
56% of 136 decks
+56% synergy
Tundra
55% of 140 decks
+55% synergy
Scrubland
55% of 152 decks
+55% synergy
Taiga
54% of 154 decks
+54% synergy
Volcanic Island
52% of 161 decks
+52% synergy
Badlands
48% of 194 decks
+48% synergy
Command Tower
45% of 383 decks
+45% synergy
Plateau
44% of 219 decks
+44% synergy
Sacred Foundry
32% of 219 decks
+32% synergy
Blood Crypt
29% of 194 decks
+29% synergy
Stomping Ground
27% of 154 decks
+27% synergy
Savai Triome
26% of 152 decks
+26% synergy
Temple Garden
26% of 136 decks
+26% synergy
Godless Shrine
24% of 152 decks
+24% synergy
Spectator Seating
24% of 219 decks
+24% synergy
Overgrown Tomb
23% of 132 decks
+23% synergy
Hallowed Fountain
21% of 140 decks
+21% synergy
Clifftop Retreat
21% of 219 decks
+21% synergy
Breeding Pool
21% of 124 decks
+21% synergy
Steam Vents
20% of 161 decks
+20% synergy
Indatha Triome
20% of 123 decks
+20% synergy
Watery Grave
20% of 133 decks
+20% synergy
Ketria Triome
20% of 124 decks
+20% synergy
Exotic Orchard
20% of 383 decks
+20% synergy
Jetmir's Garden
19% of 136 decks
+19% synergy
Zagoth Triome
19% of 122 decks
+19% synergy
Raugrin Triome
19% of 140 decks
+19% synergy
Arid Mesa
17% of 383 decks
+17% synergy
Battlefield Forge
17% of 219 decks
+17% synergy
Ziatora's Proving Ground
16% of 132 decks
+16% synergy
Spara's Headquarters
15% of 122 decks
+15% synergy
Vault of Champions
14% of 152 decks
+14% synergy
Dragonskull Summit
14% of 194 decks
+14% synergy
Bloodstained Mire
14% of 383 decks
+14% synergy
Mystic Monastery
14% of 140 decks
+14% synergy
Myriad Landscape
14% of 383 decks
+14% synergy
Luxury Suite
14% of 194 decks
+14% synergy
Raffine's Tower
14% of 124 decks
+14% synergy
Sundown Pass
14% of 219 decks
+14% synergy
Rugged Prairie
14% of 219 decks
+14% synergy
Smoldering Marsh
13% of 194 decks
+13% synergy
Xander's Lounge
13% of 133 decks
+13% synergy
Wooded Foothills
13% of 383 decks
+13% synergy
The World Tree
12% of 122 decks
+12% synergy
Scalding Tarn
12% of 383 decks
+12% synergy
Marsh Flats
12% of 383 decks
+12% synergy
Sulfurous Springs
12% of 194 decks
+12% synergy