Vedalken Certarch (Card)
Vedalken Certarch
In 289 decks
0.01% of 3092936 decks
Hylda of the Icy Crown
0.36% of 12455 decks
45 decks
Azami, Lady of Scrolls
0.39% of 4104 decks
16 decks
Urza, Lord High Artificer
0.09% of 15225 decks
13 decks
Unctus, Grand Metatect
1.14% of 965 decks
11 decks
Lonis, Cryptozoologist
0.19% of 4657 decks
9 decks
Memnarch
0.47% of 1710 decks
8 decks
Urza, Chief Artificer
0.04% of 14765 decks
6 decks
Breya, Etherium Shaper
0.04% of 16174 decks
6 decks
Padeem, Consul of Innovation
1.29% of 388 decks
5 decks
The Reality Chip
0.34% of 1487 decks
5 decks
Sai, Master Thopterist
0.21% of 2343 decks
5 decks
Shorikai, Genesis Engine
0.03% of 19268 decks
5 decks
Burakos, Party Leader // Clan Crafter
2.88% of 139 decks
4 decks
Jhoira, Weatherlight Captain
0.07% of 6105 decks
4 decks
Morska, Undersea Sleuth
0.06% of 6805 decks
4 decks
Mendicant Core, Guidelight
0.05% of 7987 decks
4 decks
Urtet, Remnant of Memnarch
0.03% of 14099 decks
4 decks
Ayesha Tanaka, Armorer
0.34% of 885 decks
3 decks
Kotori, Pilot Prodigy
0.13% of 2392 decks
3 decks
Myra the Magnificent
0.10% of 2898 decks
3 decks
New Cards
Golbez, Crystal Collector
40% of 5 decks
+40% synergy
The Seriema
33% of 3 decks
+33% synergy
Judge Magister Gabranth
25% of 4 decks
+25% synergy
Vivi Ornitier
20% of 5 decks
+20% synergy
Locke Cole
20% of 5 decks
+20% synergy
High Synergy Cards
Swords to Plowshares
39% of 134 decks
+39% synergy
Counterspell
35% of 289 decks
+35% synergy
Etherium Sculptor
32% of 289 decks
+32% synergy
Dispatch
32% of 134 decks
+32% synergy
Seat of the Synod
31% of 289 decks
+31% synergy
Reliquary Tower
31% of 289 decks
+31% synergy
Tireless Tracker
29% of 41 decks
+29% synergy
Path to Exile
28% of 134 decks
+28% synergy
Vault of Whispers
28% of 58 decks
+28% synergy
Foundry Inspector
27% of 289 decks
+27% synergy
Top Cards
Ulvenwald Mysteries
27% of 41 decks
+27% synergy
Peregrin Took
27% of 41 decks
+27% synergy
Gold Myr
25% of 134 decks
+25% synergy
Sharae of Numbing Depths
25% of 130 decks
+25% synergy
Silver Myr
25% of 289 decks
+25% synergy
Wavesifter
24% of 41 decks
+24% synergy
Court Street Denizen
24% of 134 decks
+24% synergy
Negate
23% of 289 decks
+23% synergy
Master of Etherium
22% of 289 decks
+22% synergy
Llanowar Elves
22% of 41 decks
+22% synergy
Game Changers
Smothering Tithe
22% of 134 decks
+22% synergy
Enlightened Tutor
18% of 134 decks
+18% synergy
Cyclonic Rift
16% of 289 decks
+16% synergy
Rhystic Study
15% of 289 decks
+15% synergy
Demonic Tutor
12% of 58 decks
+12% synergy
Teferi's Protection
10% of 134 decks
+10% synergy
Urza, Lord High Artificer
10% of 289 decks
+10% synergy
Grand Arbiter Augustin IV
9% of 134 decks
+9% synergy
Mystical Tutor
9% of 289 decks
+9% synergy
Notion Thief
9% of 58 decks
+9% synergy
Creatures
Tireless Provisioner
22% of 41 decks
+22% synergy
Adrix and Nev, Twincasters
22% of 41 decks
+22% synergy
Enthusiastic Mechanaut
22% of 60 decks
+22% synergy
Sai, Master Thopterist
20% of 289 decks
+20% synergy
Copper Myr
20% of 41 decks
+20% synergy
Padeem, Consul of Innovation
19% of 289 decks
+19% synergy
Topplegeist
19% of 134 decks
+19% synergy
Vedalken Humiliator
18% of 289 decks
+18% synergy
Iron Myr
18% of 60 decks
+18% synergy
Minister of Impediments
18% of 134 decks
+18% synergy
Ornithopter of Paradise
18% of 289 decks
+18% synergy
Vedalken Engineer
17% of 289 decks
+17% synergy
Baleful Strix
17% of 58 decks
+17% synergy
Reclamation Sage
17% of 41 decks
+17% synergy
Emry, Lurker of the Loch
16% of 289 decks
+16% synergy
Leaden Myr
16% of 58 decks
+16% synergy
Voyager Quickwelder
15% of 41 decks
+15% synergy
Teething Wurmlet
15% of 41 decks
+15% synergy
Vedalken Archmage
15% of 289 decks
+15% synergy
Sharuum the Hegemon
14% of 35 decks
+14% synergy
Thought Monitor
14% of 289 decks
+14% synergy
Solemn Simulacrum
14% of 289 decks
+14% synergy
Esper Sentinel
14% of 134 decks
+14% synergy
Drumbellower
14% of 134 decks
+14% synergy
Grand Architect
14% of 289 decks
+14% synergy
Junk Winder
13% of 289 decks
+13% synergy
Shimmer Myr
13% of 289 decks
+13% synergy
Giant Killer
13% of 134 decks
+13% synergy
Tough Cookie
13% of 39 decks
+13% synergy
Chief Engineer
13% of 289 decks
+13% synergy
Sunblast Angel
13% of 134 decks
+13% synergy
Gideon's Lawkeeper
13% of 134 decks
+13% synergy
Palladium Myr
12% of 289 decks
+12% synergy
Graf Mole
12% of 41 decks
+12% synergy
Ezuri's Brigade
12% of 41 decks
+12% synergy
Gala Greeters
12% of 41 decks
+12% synergy
Birds of Paradise
12% of 41 decks
+12% synergy
Sarinth Steelseeker
12% of 41 decks
+12% synergy
Gilded Goose
12% of 41 decks
+12% synergy
Jaheira, Friend of the Forest
12% of 41 decks
+12% synergy
Ornithopter
12% of 289 decks
+12% synergy
Kappa Cannoneer
12% of 289 decks
+12% synergy
Jor Kadeen, the Prevailer
12% of 25 decks
+12% synergy
Alibou, Ancient Witness
12% of 25 decks
+12% synergy
Chief of the Foundry
12% of 289 decks
+12% synergy
Whirler Rogue
12% of 289 decks
+12% synergy
Enigma Sphinx
11% of 35 decks
+11% synergy
Tawnos, Solemn Survivor
11% of 35 decks
+11% synergy
Magister Sphinx
11% of 35 decks
+11% synergy
Steel Overseer
11% of 289 decks
+11% synergy
Instants
Galvanic Blast
20% of 60 decks
+20% synergy
Confront the Unknown
20% of 41 decks
+20% synergy
Dovin's Veto
19% of 134 decks
+19% synergy
Beast Within
17% of 41 decks
+17% synergy
Stoic Rebuttal
17% of 289 decks
+17% synergy
Generous Gift
16% of 134 decks
+16% synergy
Despark
14% of 35 decks
+14% synergy
Plunge into Winter
12% of 128 decks
+12% synergy
Heroic Intervention
12% of 41 decks
+12% synergy
Brainstorm
12% of 289 decks
+12% synergy
Blustersquall
12% of 289 decks
+12% synergy
Abrade
12% of 60 decks
+12% synergy
Stroke of Midnight
12% of 130 decks
+12% synergy
Void Rend
11% of 35 decks
+11% synergy
Mortify
11% of 35 decks
+11% synergy
Arcane Denial
11% of 289 decks
+11% synergy
Dramatic Reversal
11% of 289 decks
+11% synergy
Pongify
11% of 289 decks
+11% synergy
An Offer You Can't Refuse
11% of 289 decks
+11% synergy
Welding Sparks
10% of 60 decks
+10% synergy
Izzet Charm
10% of 60 decks
+10% synergy
Fog
10% of 41 decks
+10% synergy
Reality Shift
9% of 289 decks
+9% synergy
Cryptic Command
9% of 289 decks
+9% synergy
Urza's Rebuff
9% of 289 decks
+9% synergy
Dark Ritual
9% of 58 decks
+9% synergy
Chaos Warp
8% of 60 decks
+8% synergy
Bottle-Cap Blast
8% of 50 decks
+8% synergy
Mana Drain
8% of 289 decks
+8% synergy
Thirst for Knowledge
8% of 289 decks
+8% synergy
High Tide
8% of 289 decks
+8% synergy
Dispense Justice
7% of 134 decks
+7% synergy
Growth Spiral
7% of 41 decks
+7% synergy
Rampage of the Clans
7% of 41 decks
+7% synergy
Second Harvest
7% of 41 decks
+7% synergy
Return to Nature
7% of 41 decks
+7% synergy
Ride's End
7% of 41 decks
+7% synergy
Quandrix Command
7% of 41 decks
+7% synergy
Worldly Tutor
7% of 41 decks
+7% synergy
Swan Song
7% of 289 decks
+7% synergy
Disruption Protocol
7% of 289 decks
+7% synergy
Whir of Invention
7% of 289 decks
+7% synergy
Countersquall
7% of 58 decks
+7% synergy
Murder
7% of 58 decks
+7% synergy
Vampiric Tutor
7% of 58 decks
+7% synergy
Feeling of Dread
7% of 134 decks
+7% synergy
Lightning Bolt
7% of 60 decks
+7% synergy
Big Score
7% of 60 decks
+7% synergy
Shock
7% of 60 decks
+7% synergy
Shrapnel Blast
7% of 60 decks
+7% synergy
Sorceries
Thoughtcast
21% of 289 decks
+21% synergy
Voyage Home
20% of 41 decks
+20% synergy
Cultivate
20% of 41 decks
+20% synergy
Farseek
15% of 41 decks
+15% synergy
Rampant Growth
15% of 41 decks
+15% synergy
Vindicate
14% of 35 decks
+14% synergy
Fabricate
14% of 289 decks
+14% synergy
Organic Extinction
13% of 134 decks
+13% synergy
Nature's Lore
12% of 41 decks
+12% synergy
Feed the Swarm
12% of 58 decks
+12% synergy
Ponder
10% of 289 decks
+10% synergy
Blasphemous Act
10% of 60 decks
+10% synergy
Tune Up
10% of 41 decks
+10% synergy
Root Out
10% of 41 decks
+10% synergy
Don't Move
9% of 112 decks
+9% synergy
Concussive Bolt
8% of 60 decks
+8% synergy
Split Up
8% of 72 decks
+8% synergy
Supreme Verdict
8% of 134 decks
+8% synergy
Farewell
7% of 134 decks
+7% synergy
Idyllic Tutor
7% of 134 decks
+7% synergy
Approach of the Second Sun
7% of 134 decks
+7% synergy
Bond of Discipline
7% of 134 decks
+7% synergy
Austere Command
7% of 134 decks
+7% synergy
Collision Course
7% of 41 decks
+7% synergy
Sleep
7% of 289 decks
+7% synergy
Coveted Prize
7% of 58 decks
+7% synergy
Toxic Deluge
7% of 58 decks
+7% synergy
Thwart the Grave
7% of 58 decks
+7% synergy
Reverse Engineer
7% of 289 decks
+7% synergy
Borrowing 100,000 Arrows
6% of 289 decks
+6% synergy
Preordain
6% of 289 decks
+6% synergy
Anzrag's Rampage
6% of 50 decks
+6% synergy
Dance of the Manse
6% of 134 decks
+6% synergy
Cone of Cold
6% of 289 decks
+6% synergy
Suppression Ray
6% of 85 decks
+6% synergy
Rise and Shine
5% of 289 decks
+5% synergy
Hex
5% of 58 decks
+5% synergy
Their Name Is Death
5% of 58 decks
+5% synergy
Mnemonic Betrayal
5% of 58 decks
+5% synergy
Monumental Corruption
5% of 58 decks
+5% synergy
Vandalblast
5% of 60 decks
+5% synergy
Faithless Looting
5% of 60 decks
+5% synergy
Expressive Iteration
5% of 60 decks
+5% synergy
Utility Artifacts
Door to Nothingness
33% of 9 decks
+33% synergy
Swiftfoot Boots
22% of 289 decks
+22% synergy
Lightning Greaves
16% of 289 decks
+16% synergy
Unwinding Clock
16% of 289 decks
+16% synergy
Cranial Plating
14% of 58 decks
+14% synergy
Hylda's Crown of Winter
14% of 279 decks
+14% synergy
Scepter of Dominance
13% of 134 decks
+13% synergy
Salvation Engine
12% of 41 decks
+12% synergy
Guidelight Pathmaker
12% of 42 decks
+12% synergy
Thopter Foundry
11% of 35 decks
+11% synergy
Wayfarer's Bauble
11% of 289 decks
+11% synergy
Icy Manipulator
11% of 289 decks
+11% synergy
Combine Chrysalis
10% of 41 decks
+10% synergy
Inspiring Statuary
9% of 289 decks
+9% synergy
Sensei's Divining Top
9% of 289 decks
+9% synergy
Mystic Forge
8% of 289 decks
+8% synergy
Isochron Scepter
8% of 289 decks
+8% synergy
Encroaching Mycosynth
8% of 289 decks
+8% synergy
Manifold Key
8% of 289 decks
+8% synergy
Sapphire Medallion
8% of 289 decks
+8% synergy
Voltaic Key
8% of 289 decks
+8% synergy
Repurposing Bay
7% of 94 decks
+7% synergy
Alacrian Armory
7% of 41 decks
+7% synergy
Sculpting Steel
7% of 289 decks
+7% synergy
Darksteel Forge
7% of 289 decks
+7% synergy
Winter Orb
7% of 289 decks
+7% synergy
Celestial Armor
7% of 58 decks
+7% synergy
Pyrite Spellbomb
7% of 60 decks
+7% synergy
Cloud Key
7% of 289 decks
+7% synergy
Thousand Moons Smithy
6% of 111 decks
+6% synergy
Vedalken Orrery
6% of 289 decks
+6% synergy
Tamiyo's Journal
6% of 289 decks
+6% synergy
Halo Fountain
6% of 134 decks
+6% synergy
Parhelion II
6% of 134 decks
+6% synergy
Clock of Omens
6% of 289 decks
+6% synergy
Icebind Pillar
6% of 289 decks
+6% synergy
Spellbook
6% of 289 decks
+6% synergy
Mycosynth Lattice
6% of 289 decks
+6% synergy
Simulacrum Synthesizer
6% of 200 decks
+5% synergy
Diamond Pick-Axe
5% of 56 decks
+5% synergy
Greatsword of Tyr
5% of 134 decks
+5% synergy
Thopter Shop
5% of 134 decks
+5% synergy
Shorikai, Genesis Engine
5% of 134 decks
+5% synergy
Aether Spellbomb
5% of 289 decks
+5% synergy
Mirrorworks
5% of 289 decks
+5% synergy
Nettlecyst
5% of 289 decks
+5% synergy
Vorpal Sword
5% of 58 decks
+5% synergy
Blood Fountain
5% of 58 decks
+5% synergy
Vat of Rebirth
5% of 58 decks
+5% synergy
Enchantments
Citadel Siege
19% of 134 decks
+19% synergy
Thopter Spy Network
17% of 289 decks
+17% synergy
Solitary Sanctuary
16% of 130 decks
+16% synergy
Opposition
15% of 289 decks
+15% synergy
Wilderness Reclamation
15% of 41 decks
+15% synergy
Doubling Season
15% of 41 decks
+15% synergy
At Knifepoint
14% of 21 decks
+14% synergy
Verity Circle
14% of 289 decks
+14% synergy
Ongoing Investigation
12% of 41 decks
+12% synergy
Efficient Construction
12% of 289 decks
+12% synergy
Mechanized Production
10% of 289 decks
+10% synergy
Propaganda
10% of 289 decks
+10% synergy
On the Trail
10% of 29 decks
+10% synergy
Parallel Lives
10% of 41 decks
+10% synergy
Garruk's Uprising
10% of 41 decks
+10% synergy
Ghostly Prison
10% of 134 decks
+10% synergy
Retreat to Coralhelm
9% of 289 decks
+9% synergy
Mystic Remora
9% of 289 decks
+9% synergy
The Flesh Is Weak
9% of 35 decks
+9% synergy
Storm the Vault
8% of 60 decks
+8% synergy
Anointed Procession
8% of 134 decks
+8% synergy
Diversionary Tactics
8% of 134 decks
+8% synergy
Mirrodin Besieged
8% of 289 decks
+8% synergy
Intruder Alarm
8% of 289 decks
+8% synergy
Tempered Steel
7% of 134 decks
+7% synergy
Fae Offering
7% of 41 decks
+7% synergy
Artificer Class
7% of 289 decks
+7% synergy
Ghirapur Aether Grid
7% of 60 decks
+7% synergy
Blind Obedience
5% of 134 decks
+5% synergy
Palliation Accord
5% of 134 decks
+5% synergy
Spatial Binding
5% of 58 decks
+5% synergy
Black Market Connections
5% of 58 decks
+5% synergy
Caretaker's Talent
5% of 78 decks
+5% synergy
Impact Tremors
5% of 60 decks
+5% synergy
Battles
Invasion of Zendikar
7% of 41 decks
+7% synergy
Invasion of Kaladesh
5% of 60 decks
+5% synergy
Planeswalkers
Tezzeret, Cruel Captain
14% of 7 decks
+14% synergy
Saheeli, Sublime Artificer
10% of 60 decks
+10% synergy
Teferi, Who Slows the Sunset
10% of 134 decks
+10% synergy
Daretti, Scrap Savant
8% of 60 decks
+8% synergy
Tezzeret, Betrayer of Flesh
8% of 289 decks
+8% synergy
Tezzeret, Artifice Master
7% of 289 decks
+7% synergy
Tezzeret, Master of the Bridge
7% of 58 decks
+7% synergy
Tamiyo, the Moon Sage
6% of 289 decks
+6% synergy
Tezzeret the Seeker
5% of 289 decks
+5% synergy
Saheeli, Filigree Master
5% of 60 decks
+5% synergy
Utility Lands
Ancient Den
25% of 134 decks
+25% synergy
Great Furnace
23% of 60 decks
+23% synergy
Darksteel Citadel
23% of 289 decks
+23% synergy
Bojuka Bog
22% of 58 decks
+22% synergy
Mystic Sanctuary
17% of 289 decks
+17% synergy
Buried Ruin
16% of 289 decks
+16% synergy
Academy Ruins
16% of 289 decks
+16% synergy
Archway of Innovation
15% of 176 decks
+15% synergy
Inventors' Fair
11% of 289 decks
+11% synergy
Rogue's Passage
10% of 289 decks
+10% synergy
Tranquil Thicket
10% of 41 decks
+10% synergy
Otawara, Soaring City
9% of 289 decks
+9% synergy
Urza's Saga
9% of 289 decks
+9% synergy
Temple of the False God
8% of 289 decks
+8% synergy
Castle Vantress
7% of 289 decks
+7% synergy
Urza's Mine
7% of 289 decks
+7% synergy
Urza's Power Plant
7% of 289 decks
+7% synergy
Urza's Tower
7% of 289 decks
+7% synergy
Arcane Lighthouse
6% of 289 decks
+6% synergy
Muraganda Raceway
5% of 94 decks
+5% synergy
Ishgard, the Holy See
5% of 19 decks
+5% synergy
Emeria, the Sky Ruin
5% of 134 decks
+5% synergy
Witch's Cottage
5% of 58 decks
+5% synergy
Mana Artifacts
Sol Ring
74% of 289 decks
+74% synergy
Arcane Signet
60% of 289 decks
+60% synergy
Azorius Signet
40% of 134 decks
+40% synergy
Talisman of Progress
32% of 134 decks
+32% synergy
Thought Vessel
29% of 289 decks
+29% synergy
Dimir Signet
26% of 58 decks
+26% synergy
Izzet Signet
25% of 60 decks
+25% synergy
Mind Stone
25% of 289 decks
+25% synergy
Orzhov Signet
23% of 35 decks
+23% synergy
Talisman of Unity
22% of 18 decks
+22% synergy
Fellwar Stone
20% of 289 decks
+20% synergy
Rakdos Signet
18% of 28 decks
+18% synergy
Talisman of Creativity
15% of 60 decks
+15% synergy
Everflowing Chalice
15% of 289 decks
+15% synergy
Talisman of Curiosity
15% of 41 decks
+15% synergy
Commander's Sphere
14% of 289 decks
+14% synergy
Sky Diamond
14% of 289 decks
+14% synergy
Talisman of Dominance
14% of 58 decks
+14% synergy
Thran Dynamo
13% of 289 decks
+13% synergy
Simic Signet
12% of 41 decks
+12% synergy
Boros Signet
12% of 25 decks
+12% synergy
Liquimetal Torque
10% of 289 decks
+10% synergy
Gilded Lotus
10% of 289 decks
+10% synergy
Mox Opal
9% of 289 decks
+9% synergy
Marble Diamond
8% of 134 decks
+8% synergy
Hedron Archive
7% of 289 decks
+7% synergy
Worn Powerstone
7% of 289 decks
+7% synergy
Charcoal Diamond
7% of 58 decks
+7% synergy
Decanter of Endless Water
6% of 289 decks
+6% synergy
Lotus Petal
6% of 289 decks
+6% synergy
Basalt Monolith
6% of 289 decks
+6% synergy
Coldsteel Heart
6% of 289 decks
+6% synergy
Moonsnare Prototype
5% of 289 decks
+5% synergy
Cursed Mirror
5% of 60 decks
+5% synergy
Lands
Mountain
93% of 60 decks
+93% synergy
Island
90% of 289 decks
+90% synergy
Forest
85% of 41 decks
+85% synergy
Swamp
84% of 58 decks
+84% synergy
Plains
83% of 134 decks
+83% synergy
Command Tower
51% of 289 decks
+51% synergy
Arcane Sanctum
49% of 35 decks
+49% synergy
Prairie Stream
46% of 134 decks
+46% synergy
Rustvale Bridge
40% of 25 decks
+40% synergy
Azorius Chancery
34% of 134 decks
+34% synergy
Temple of Mystery
34% of 41 decks
+34% synergy
Crystal Quarry
33% of 9 decks
+33% synergy
Glacial Fortress
33% of 134 decks
+33% synergy
Mystic Monastery
32% of 25 decks
+32% synergy
Silverbluff Bridge
30% of 60 decks
+30% synergy
Dimir Aqueduct
29% of 58 decks
+29% synergy
Skycloud Expanse
29% of 134 decks
+29% synergy
Hallowed Fountain
29% of 134 decks
+29% synergy
Crumbling Necropolis
29% of 28 decks
+29% synergy
Orzhov Basilica
29% of 35 decks
+29% synergy
Razortide Bridge
28% of 134 decks
+28% synergy
Canopy Vista
28% of 18 decks
+28% synergy
Seaside Citadel
28% of 18 decks
+28% synergy
Temple of Enlightenment
25% of 134 decks
+25% synergy
Port Town
25% of 134 decks
+25% synergy
Mistvault Bridge
24% of 58 decks
+24% synergy
Frontier Bivouac
23% of 13 decks
+23% synergy
Goldmire Bridge
23% of 35 decks
+23% synergy
Temple of Plenty
22% of 18 decks
+22% synergy
Selesnya Sanctuary
22% of 18 decks
+22% synergy
Sungrass Prairie
22% of 18 decks
+22% synergy
Hinterland Harbor
22% of 41 decks
+22% synergy
Temple of Epiphany
22% of 60 decks
+22% synergy
Perilous Landscape
21% of 19 decks
+21% synergy
Sea of Clouds
21% of 134 decks
+21% synergy
Tranquil Cove
20% of 134 decks
+20% synergy
Shivan Reef
20% of 60 decks
+20% synergy
Swiftwater Cliffs
20% of 60 decks
+20% synergy
Vineglimmer Snarl
20% of 41 decks
+20% synergy
Yavimaya Coast
20% of 41 decks
+20% synergy
Simic Guildgate
20% of 41 decks
+20% synergy
Simic Growth Chamber
20% of 41 decks
+20% synergy
Exotic Orchard
19% of 289 decks
+19% synergy
Sunken Hollow
19% of 58 decks
+19% synergy
Nomad Outpost
18% of 17 decks
+18% synergy
Contaminated Landscape
17% of 23 decks
+17% synergy
Snow-Covered Plains
17% of 134 decks
+17% synergy
Breeding Pool
17% of 41 decks
+17% synergy
Scattered Groves
17% of 18 decks
+17% synergy
Thornglint Bridge
17% of 18 decks
+17% synergy