Field Surgeon (Card)

Field Surgeon
In 318 decks 0% of 2319359 decks
Kyle Keller
Dec 3, 2019
Forgotten Harvest - Non-Combat Feather
She protec, she attac, but most importantly, she bring bac
Archidekt
Commander Spellbook
Moxfield
Scryfall
MTGStocks
Abdel Adrian, Gorion's Ward // Far Traveler
4.36% of 734 decks 32 decks
Emmara, Soul of the Accord
0.60% of 3989 decks 24 decks
Saint Traft and Rem Karolus
1.24% of 1608 decks 20 decks
Wylie Duke, Atiin Hero
2.11% of 616 decks 13 decks
Hazduhr the Abbot
29.41% of 34 decks 10 decks
Masako the Humorless
4.64% of 194 decks 9 decks
Atalya, Samite Master
8.70% of 92 decks 8 decks
Ohabi Caleria
0.64% of 1245 decks 8 decks
Lulu, Loyal Hollyphant // Cultist of the Absolute
2.39% of 293 decks 7 decks
Plargg, Dean of Chaos
1.19% of 587 decks 7 decks
Cadira, Caller of the Small
0.16% of 3823 decks 6 decks
Lulu, Loyal Hollyphant // Far Traveler
3.25% of 154 decks 5 decks
Zinnia, Valley's Voice
0.07% of 7294 decks 5 decks
Orah, Skyclave Hierophant
0.18% of 2788 decks 5 decks
Lulu, Loyal Hollyphant // Cloakwood Hermit
3.47% of 144 decks 5 decks
Shay Cormac
0.58% of 688 decks 4 decks
Lulu, Loyal Hollyphant // Guild Artisan
1.67% of 240 decks 4 decks
Kasla, the Broken Halo
0.10% of 4170 decks 4 decks
New Cards
Dazzling Theater // Prop Room
58% of 26 decks +41% synergy
Enduring Vitality
53% of 15 decks +35% synergy
Kona, Rescue Beastie
40% of 15 decks +34% synergy
House Cartographer
31% of 16 decks +31% synergy
Hushwood Verge
29% of 17 decks +10% synergy
High Synergy Cards
Glare of Subdual
61% of 96 decks +61% synergy
Opposition
51% of 71 decks +50% synergy
Wildfire Awakener
47% of 68 decks +45% synergy
Prosperous Partnership
44% of 75 decks +42% synergy
Kyren Negotiations
38% of 76 decks +38% synergy
Cryptolith Rite
41% of 96 decks +37% synergy
Nullmage Shepherd
36% of 96 decks +36% synergy
Sunshot Militia
36% of 42 decks +35% synergy
Meeting of Minds
36% of 59 decks +35% synergy
Jaspera Sentinel
34% of 93 decks +34% synergy
Top Cards
Swords to Plowshares
48% of 318 decks -15% synergy
Springleaf Drum
41% of 314 decks +39% synergy
Kykar, Wind's Fury
35% of 37 decks +31% synergy
Jeskai Ascendancy
35% of 37 decks +29% synergy
Whirlwind of Thought
35% of 37 decks +25% synergy
Path to Exile
35% of 313 decks -11% synergy
Invasion of Segovia
34% of 58 decks +33% synergy
Starscape Cleric
33% of 12 decks +30% synergy
Well Rested
32% of 37 decks +31% synergy
Cultivate
32% of 96 decks -14% synergy
Creatures
Fallowsage
30% of 71 decks +29% synergy
Noble Hierarch
29% of 17 decks +13% synergy
Disciple of Deceit
29% of 14 decks +28% synergy
Kasla, the Broken Halo
29% of 35 decks +28% synergy
Seedborn Muse
28% of 96 decks +20% synergy
Avacyn's Pilgrim
28% of 96 decks +14% synergy
Elas il-Kor, Sadistic Pilgrim
28% of 47 decks +16% synergy
Rip, Spawn Hunter
27% of 11 decks +26% synergy
Selesnya Evangel
27% of 96 decks +27% synergy
Flockchaser Phantom
25% of 59 decks +25% synergy
Drumbellower
25% of 302 decks +23% synergy
Emmara, Soul of the Accord
25% of 96 decks +24% synergy
Cayth, Famed Mechanist
25% of 12 decks +20% synergy
Third Path Iconoclast
25% of 36 decks +18% synergy
Citanul Stalwart
24% of 82 decks +24% synergy
Crackleburr
24% of 37 decks +24% synergy
Wylie Duke, Atiin Hero
24% of 29 decks +23% synergy
Edgewalker
24% of 54 decks +23% synergy
Loam Dryad
24% of 96 decks +24% synergy
Magda, Brazen Outlaw
24% of 76 decks +21% synergy
Saryth, the Viper's Fang
23% of 91 decks +20% synergy
Saruli Caretaker
22% of 95 decks +22% synergy
Mentor of the Meek
22% of 313 decks +16% synergy
Siren of the Silent Song
21% of 14 decks +21% synergy
Hinterland Sanctifier
21% of 14 decks +17% synergy
Daring Thief
21% of 71 decks +21% synergy
Llanowar Elves
21% of 96 decks -0% synergy
Birds of Paradise
21% of 96 decks -6% synergy
Skirsdag High Priest
21% of 53 decks +20% synergy
Soul Warden
21% of 318 decks +15% synergy
Mistmeadow Vanisher
21% of 58 decks +20% synergy
Doomed Necromancer
20% of 54 decks +19% synergy
Fain, the Broker
20% of 50 decks +19% synergy
Evolution Witness
20% of 25 decks +15% synergy
Accursed Marauder
20% of 15 decks +11% synergy
Éowyn, Shieldmaiden
19% of 26 decks +16% synergy
Ioreth of the Healing House
19% of 47 decks +18% synergy
Reluctant Role Model
19% of 42 decks +16% synergy
Anim Pakal, Thousandth Moon
19% of 42 decks +11% synergy
The Locust God
19% of 37 decks +14% synergy
Tocasia, Dig Site Mentor
19% of 16 decks +19% synergy
Kelpie Guide
19% of 70 decks +18% synergy
Stonybrook Schoolmaster
19% of 313 decks +18% synergy
The Wandering Rescuer
18% of 71 decks +17% synergy
Queen Allenal of Ruadach
18% of 90 decks +15% synergy
Seeker of Skybreak
18% of 96 decks +17% synergy
Elvish Mystic
18% of 96 decks -0% synergy
Mother of Runes
17% of 318 decks +11% synergy
Forensic Researcher
17% of 29 decks +17% synergy
Zulaport Cutthroat
17% of 53 decks +7% synergy
Instants
Transcendent Message
30% of 60 decks +29% synergy
Assassin's Trophy
30% of 10 decks -0% synergy
Generous Gift
30% of 311 decks +4% synergy
Anguished Unmaking
26% of 53 decks +2% synergy
Beast Within
26% of 96 decks -12% synergy
Counterspell
25% of 71 decks -18% synergy
March of the Multitudes
25% of 96 decks +22% synergy
Artistic Refusal
22% of 59 decks +21% synergy
Heroic Intervention
22% of 96 decks -8% synergy
Boros Charm
20% of 76 decks -5% synergy
Clever Concealment
18% of 239 decks +14% synergy
Fell the Profane
18% of 17 decks +6% synergy
Dawn's Truce
18% of 68 decks +2% synergy
Despark
17% of 53 decks +2% synergy
Wear // Tear
16% of 76 decks +8% synergy
Sprout Swarm
16% of 96 decks +15% synergy
Stroke of Midnight
16% of 173 decks +3% synergy
Complete the Circuit
16% of 58 decks +15% synergy
Dramatic Reversal
15% of 71 decks +10% synergy
Brainstorm
15% of 71 decks -5% synergy
Ephemerate
15% of 311 decks +10% synergy
Cauldron Haze
15% of 53 decks +15% synergy
Lethal Scheme
14% of 49 decks +13% synergy
Legolas's Quick Reflexes
14% of 49 decks +11% synergy
Arcane Denial
14% of 71 decks -6% synergy
Negate
14% of 71 decks -9% synergy
Malakir Rebirth
14% of 51 decks +6% synergy
Village Rites
14% of 51 decks +4% synergy
Vitalize
14% of 96 decks +12% synergy
Flawless Maneuver
13% of 309 decks +3% synergy
V.A.T.S.
13% of 23 decks +12% synergy
Dovin's Veto
13% of 71 decks -6% synergy
Teferi's Protection
12% of 313 decks -7% synergy
Stoke the Flames
12% of 76 decks +11% synergy
Pile On
12% of 34 decks +11% synergy
Cloudshift
12% of 313 decks +8% synergy
Second Harvest
11% of 96 decks +7% synergy
Chord of Calling
11% of 96 decks +6% synergy
Mortify
11% of 53 decks -1% synergy
Cyclonic Rift
11% of 71 decks -16% synergy
Rite of Harmony
11% of 91 decks +8% synergy
To Arms!
11% of 314 decks +10% synergy
Aura Mutation
10% of 96 decks +7% synergy
Sundering Growth
10% of 96 decks +6% synergy
Nature's Claim
10% of 96 decks +1% synergy
Eladamri's Call
10% of 96 decks -1% synergy
Wicked Slumber
10% of 58 decks +10% synergy
Flicker of Fate
10% of 310 decks +9% synergy
Unwanted Remake
10% of 50 decks +7% synergy
Fracture
10% of 50 decks +3% synergy
Sorceries
Kodama's Reach
24% of 96 decks -7% synergy
Harvest Season
23% of 96 decks +21% synergy
Split Up
22% of 50 decks +18% synergy
Rampant Growth
21% of 96 decks -14% synergy
Damn
20% of 50 decks +4% synergy
Nature's Lore
20% of 96 decks -12% synergy
Coordinated Clobbering
19% of 16 decks +18% synergy
Blasphemous Act
18% of 76 decks -15% synergy
Shamanic Revelation
18% of 96 decks +9% synergy
Burn at the Stake
17% of 76 decks +17% synergy
Camaraderie
16% of 96 decks +13% synergy
Farseek
16% of 96 decks -19% synergy
Read the Bones
15% of 53 decks +7% synergy
Calamity of Cinders
15% of 20 decks +14% synergy
Hour of Reckoning
15% of 314 decks +11% synergy
Supreme Verdict
14% of 71 decks +0% synergy
Collective Effort
14% of 313 decks +13% synergy
Vindicate
13% of 54 decks +6% synergy
Victimize
13% of 54 decks +1% synergy
Shared Discovery
13% of 71 decks +13% synergy
Nissa's Expedition
12% of 96 decks +12% synergy
Austere Command
12% of 314 decks -1% synergy
Temporal Cleansing
12% of 58 decks +12% synergy
Three Visits
11% of 96 decks -13% synergy
Sign in Blood
11% of 53 decks +2% synergy
Devout Invocation
11% of 313 decks +11% synergy
Demonic Tutor
11% of 54 decks -11% synergy
Many Partings
10% of 58 decks +8% synergy
Rite of Oblivion
10% of 49 decks +7% synergy
Feed the Swarm
10% of 51 decks -8% synergy
Profane Prayers
9% of 54 decks +9% synergy
Revive the Shire
9% of 57 decks +7% synergy
Windfall
8% of 71 decks -4% synergy
Harmonize
8% of 96 decks -0% synergy
Dusk // Dawn
8% of 313 decks +4% synergy
Unburial Rites
8% of 53 decks +5% synergy
Dread Return
8% of 53 decks +2% synergy
Toxic Deluge
8% of 53 decks -10% synergy
Ancient Craving
7% of 54 decks +7% synergy
Unearth
7% of 54 decks +4% synergy
Diabolic Tutor
7% of 54 decks +1% synergy
Martial Coup
7% of 313 decks +4% synergy
Overrun
7% of 96 decks +5% synergy
Sevinne's Reclamation
7% of 310 decks -0% synergy
Distant Melody
7% of 71 decks +2% synergy
Preordain
7% of 71 decks -4% synergy
Battle Screech
7% of 317 decks +6% synergy
Flame Fusillade
7% of 76 decks +6% synergy
Triplicate Spirits
6% of 313 decks +6% synergy
Wrath of God
6% of 318 decks -0% synergy
Utility Artifacts
Halo Fountain
31% of 301 decks +28% synergy
Unidentified Hovership
26% of 34 decks +25% synergy
Skullclamp
20% of 314 decks +8% synergy
Swiftfoot Boots
17% of 313 decks -11% synergy
Lightning Greaves
13% of 314 decks -12% synergy
Throne of the God-Pharaoh
12% of 313 decks +11% synergy
Wayfarer's Bauble
11% of 314 decks +2% synergy
Bident of Thassa
11% of 71 decks +5% synergy
Idol of Oblivion
11% of 310 decks +6% synergy
Oketra's Monument
11% of 313 decks +9% synergy
Smuggler's Copter
10% of 313 decks +9% synergy
The Indomitable
9% of 32 decks +7% synergy
Thousand Moons Smithy
9% of 154 decks +6% synergy
Thousand-Year Elixir
9% of 314 decks +7% synergy
Pearl Medallion
9% of 318 decks +7% synergy
Heirloom Epic
8% of 60 decks +8% synergy
Ichor Wellspring
7% of 313 decks +6% synergy
Shorikai, Genesis Engine
7% of 70 decks +4% synergy
Staff of the Storyteller
7% of 239 decks +5% synergy
Lembas
6% of 186 decks +6% synergy
Panharmonicon
6% of 313 decks +2% synergy
Mukotai Soulripper
6% of 49 decks +6% synergy
Hair-Strung Koto
6% of 314 decks +6% synergy
Potion of Healing
6% of 303 decks +6% synergy
Archaeomancer's Map
6% of 305 decks +2% synergy
Horn of Valhalla
6% of 298 decks +5% synergy
Sting, the Glinting Dagger
5% of 186 decks +4% synergy
Gilded Pinions
5% of 301 decks +5% synergy
Aerial Surveyor
5% of 302 decks +4% synergy
Battlemage's Bracers
5% of 76 decks +4% synergy
Enchantments
Intruder Alarm
31% of 71 decks +29% synergy
Quest for Renewal
26% of 96 decks +25% synergy
Nature's Chosen
24% of 96 decks +24% synergy
Aura of Dominion
24% of 71 decks +24% synergy
Impact Tremors
22% of 76 decks +13% synergy
City on Fire
22% of 68 decks +17% synergy
Elven Chorus
21% of 57 decks +17% synergy
Symbiotic Deployment
21% of 96 decks +21% synergy
Presence of Gond
20% of 96 decks +19% synergy
Lost in the Maze
17% of 29 decks +16% synergy
Phyrexian Reclamation
15% of 54 decks +11% synergy
Curse of Bounty
14% of 96 decks +13% synergy
Tocasia's Welcome
13% of 272 decks +9% synergy
Phyrexian Arena
13% of 54 decks -2% synergy
Earthcraft
12% of 96 decks +12% synergy
Black Market Connections
12% of 49 decks +1% synergy
Intangible Virtue
12% of 313 decks +7% synergy
Smothering Tithe
12% of 312 decks -13% synergy
Trapped in the Screen
12% of 43 decks +10% synergy
Retribution of the Ancients
11% of 53 decks +11% synergy
Freed from the Real
11% of 71 decks +9% synergy
Diversionary Tactics
11% of 317 decks +11% synergy
Assemble the Legion
11% of 76 decks +6% synergy
Song of Freyalise
10% of 96 decks +9% synergy
Aura Shards
10% of 96 decks +2% synergy
Wild Growth
10% of 96 decks -1% synergy
Pemmin's Aura
10% of 71 decks +9% synergy
Rhystic Study
10% of 71 decks -18% synergy
Virtue of Knowledge
10% of 42 decks +7% synergy
Guardian Project
9% of 95 decks +1% synergy
Multani's Harmony
9% of 96 decks +9% synergy
Conclave Tribunal
9% of 313 decks +9% synergy
Animate Dead
9% of 54 decks +0% synergy
Anointed Procession
9% of 313 decks +0% synergy
Rabble Rousing
9% of 301 decks +7% synergy
Warleader's Call
9% of 35 decks -2% synergy
Second Wind
8% of 71 decks +8% synergy
Retreat to Coralhelm
8% of 71 decks +6% synergy
Reconnaissance Mission
8% of 71 decks +4% synergy
Inspiring Leader
8% of 298 decks +6% synergy
Instill Energy
8% of 96 decks +7% synergy
Leyline Immersion
8% of 60 decks +7% synergy
Utopia Sprawl
8% of 96 decks +1% synergy
Divine Visitation
8% of 313 decks +6% synergy
Elemental Mastery
8% of 76 decks +7% synergy
Etchings of the Chosen
8% of 52 decks +4% synergy
Cathars' Crusade
8% of 313 decks +2% synergy
Hidden Stockpile
8% of 53 decks +6% synergy
Sanguine Bond
8% of 53 decks +2% synergy
Roar of Resistance
7% of 68 decks +6% synergy
Planeswalkers
Teferi, Who Slows the Sunset
9% of 70 decks +6% synergy
Huatli, Radiant Champion
8% of 96 decks +7% synergy
Elspeth, Sun's Champion
8% of 313 decks +3% synergy
Jiang Yanggu, Wildcrafter
5% of 95 decks +4% synergy
Utility Lands
Bojuka Bog
38% of 53 decks +8% synergy
Starlit Sanctum
24% of 54 decks +23% synergy
Vault of the Archangel
21% of 53 decks +10% synergy
Otawara, Soaring City
17% of 70 decks +0% synergy
Westvale Abbey
17% of 53 decks +15% synergy
Reliquary Tower
17% of 313 decks -13% synergy
Restless Fortress
17% of 24 decks +13% synergy
The Shire
16% of 69 decks +12% synergy
Castle Ardenvale
15% of 310 decks +9% synergy
Boseiju, Who Endures
14% of 91 decks -5% synergy
Minamo, School at Water's Edge
13% of 71 decks +8% synergy
Eiganjo, Seat of the Empire
13% of 302 decks +4% synergy
Rogue's Passage
12% of 313 decks -7% synergy
War Room
12% of 307 decks +6% synergy
Secluded Steppe
12% of 317 decks +9% synergy
Windbrisk Heights
12% of 314 decks +7% synergy
Emeria, the Sky Ruin
12% of 313 decks +8% synergy
Kher Keep
11% of 76 decks +8% synergy
Gavony Township
10% of 96 decks +1% synergy
Cabal Coffers
9% of 54 decks -1% synergy
Minas Tirith
9% of 196 decks -0% synergy
Mystic Sanctuary
8% of 71 decks -4% synergy
Khalni Garden
8% of 96 decks +7% synergy
Maze of Ith
8% of 318 decks +5% synergy
Castle Embereth
8% of 76 decks +4% synergy
Mortuary Mire
8% of 53 decks +3% synergy
Phyrexian Tower
7% of 54 decks -1% synergy
Nykthos, Shrine to Nyx
7% of 313 decks +2% synergy
Mosswort Bridge
7% of 96 decks -3% synergy
Monumental Henge
7% of 84 decks +4% synergy
Idyllic Grange
7% of 310 decks +6% synergy
Forgotten Cave
7% of 76 decks +2% synergy
Sokenzan, Crucible of Defiance
7% of 76 decks +2% synergy
Kor Haven
6% of 317 decks +5% synergy
Tranquil Thicket
6% of 96 decks +2% synergy
Rivendell
6% of 49 decks +1% synergy
Takenuma, Abandoned Mire
6% of 49 decks -4% synergy
Ancient Tomb
6% of 318 decks -4% synergy
Witch's Cottage
6% of 51 decks +2% synergy
Castle Locthwain
6% of 51 decks +1% synergy
Drifting Meadow
6% of 318 decks +5% synergy
Vault of Whispers
6% of 53 decks +1% synergy
Lonely Sandbar
6% of 71 decks +2% synergy
Barren Moor
6% of 54 decks +2% synergy
Mistveil Plains
5% of 313 decks +4% synergy
Gingerbread Cabin
5% of 95 decks +4% synergy
Axgard Armory
5% of 76 decks +2% synergy
Sunhome, Fortress of the Legion
5% of 76 decks +0% synergy
Slayers' Stronghold
5% of 76 decks -1% synergy
Grove of the Guardian
5% of 96 decks +5% synergy
Mana Artifacts
Sol Ring
64% of 318 decks -21% synergy
Arcane Signet
52% of 310 decks -21% synergy
Orzhov Signet
40% of 53 decks +13% synergy
Talisman of Hierarchy
37% of 52 decks +12% synergy
Talisman of Conviction
26% of 76 decks +3% synergy
Boros Signet
26% of 76 decks +3% synergy
Talisman of Progress
25% of 71 decks +2% synergy
Talisman of Creativity
24% of 37 decks -5% synergy
Relic of Legends
22% of 287 decks +20% synergy
Talisman of Dominance
21% of 14 decks -10% synergy
Wand of the Worldsoul
21% of 223 decks +20% synergy
Azorius Signet
18% of 71 decks -7% synergy
Mind Stone
18% of 318 decks +1% synergy
Selesnya Signet
14% of 96 decks +5% synergy
Paradise Mantle
13% of 314 decks +13% synergy
Honor-Worn Shaku
13% of 314 decks +13% synergy
Thought Vessel
12% of 313 decks -5% synergy
Moonsnare Prototype
11% of 70 decks +11% synergy
Charcoal Diamond
11% of 54 decks +6% synergy
Fellwar Stone
11% of 318 decks -10% synergy
Commander's Sphere
11% of 313 decks -4% synergy
Izzet Signet
11% of 37 decks -17% synergy
Marble Diamond
9% of 318 decks +5% synergy
Fire Diamond
7% of 76 decks +1% synergy
Cultivator's Caravan
6% of 313 decks +6% synergy
Patriar's Seal
6% of 298 decks +4% synergy
Flywheel Racer
6% of 219 decks +6% synergy
Orzhov Cluestone
6% of 53 decks +5% synergy
Orzhov Locket
6% of 53 decks +5% synergy
Bounty Board
5% of 91 decks +5% synergy
Talisman of Unity
5% of 96 decks -2% synergy
Lands
Watery Grave
71% of 14 decks +31% synergy
Indatha Triome
70% of 10 decks +39% synergy
Overgrown Tomb
70% of 10 decks +28% synergy
Zagoth Triome
62% of 8 decks +32% synergy
The World Tree
60% of 5 decks +27% synergy
Raffine's Tower
57% of 14 decks +30% synergy
Command Tower
54% of 313 decks -20% synergy
Spara's Headquarters
50% of 16 decks +18% synergy
Godless Shrine
49% of 53 decks +9% synergy
Breeding Pool
47% of 17 decks +6% synergy
Mystic Monastery
46% of 37 decks +19% synergy
Hallowed Fountain
45% of 71 decks +4% synergy
Isolated Chapel
43% of 53 decks +16% synergy
Canopy Vista
42% of 96 decks +5% synergy
Prairie Stream
41% of 71 decks +7% synergy
Raugrin Triome
41% of 37 decks +14% synergy
Steam Vents
41% of 37 decks +2% synergy
Caves of Koilos
39% of 54 decks +11% synergy
Cinder Glade
38% of 13 decks -0% synergy
Orzhov Basilica
38% of 53 decks +22% synergy
Tainted Field
37% of 54 decks +24% synergy
Temple Garden
33% of 96 decks -7% synergy
Sacred Foundry
33% of 76 decks -3% synergy
Frostboil Snarl
32% of 37 decks +19% synergy
Sea of Clouds
32% of 71 decks +6% synergy
Holdout Settlement
32% of 313 decks +31% synergy
Survivors' Encampment
32% of 313 decks +31% synergy
Temple of Triumph
32% of 76 decks +15% synergy
Battlefield Forge
32% of 76 decks +6% synergy
Rejuvenating Springs
31% of 16 decks +3% synergy
Gruul Turf
31% of 13 decks +15% synergy
Jungle Shrine
31% of 13 decks -1% synergy
Glacial Fortress
30% of 71 decks +4% synergy
Seaside Citadel
29% of 17 decks +3% synergy
Selesnya Sanctuary
29% of 96 decks +15% synergy
Furycalm Snarl
29% of 76 decks +16% synergy
Clifftop Retreat
29% of 76 decks +0% synergy
Drowned Catacomb
29% of 14 decks +3% synergy
Temple of Silence
28% of 53 decks +10% synergy
Port Town
28% of 71 decks +13% synergy
Spectator Seating
28% of 76 decks +3% synergy
Sunpetal Grove
27% of 96 decks +3% synergy
Azorius Chancery
27% of 71 decks +12% synergy
Fetid Heath
26% of 53 decks +16% synergy
Boros Garrison
26% of 76 decks +11% synergy
Sungrass Prairie
26% of 96 decks +14% synergy
Bountiful Promenade
26% of 96 decks +2% synergy
Deserted Beach
26% of 70 decks +10% synergy
Dreamroot Cascade
25% of 16 decks +6% synergy
Izzet Boilerworks
24% of 37 decks +8% synergy