Feather of Flight (Card)
Feather of Flight
In 8699 decks
1% of 889299 decks
Brigone, Soldier of Meletis
57.56% of 344 decks
198 decks
Top Commanders
Eriette of the Charmed Apple
10.69% of 14154 decks
1513 decks
Light-Paws, Emperor's Voice
14.92% of 8358 decks
1247 decks
Mabel, Heir to Cragflame
20.72% of 2766 decks
573 decks
Three Dog, Galaxy News DJ
20.68% of 1939 decks
401 decks
Killian, Ink Duelist
12.26% of 2741 decks
336 decks
Pearl-Ear, Imperial Advisor
35.36% of 936 decks
331 decks
Arna Kennerüd, Skycaptain
5.61% of 4439 decks
249 decks
Uril, the Miststalker
5.51% of 3791 decks
209 decks
Calix, Guided by Fate
5.71% of 2800 decks
160 decks
Finneas, Ace Archer
6.04% of 2617 decks
158 decks
Sythis, Harvest's Hand
1.39% of 11369 decks
158 decks
Ellivere of the Wild Court
2.65% of 5696 decks
151 decks
Eriette, the Beguiler
5.56% of 2697 decks
150 decks
Baylen, the Haymaker
1.27% of 10246 decks
130 decks
Mazzy, Truesword Paladin
5.10% of 2136 decks
109 decks
Xenk, Paladin Unbroken
9.33% of 857 decks
80 decks
Phelia, Exuberant Shepherd
4.14% of 1931 decks
80 decks
New Cards
Faithful Pikemaster
100% of 3 decks
+2% synergy
Luminous Rebuke
94% of 79 decks
-4% synergy
Twinblade Blessing
66% of 1790 decks
+62% synergy
Sheltered by Ghosts
65% of 4449 decks
+57% synergy
Elenda, Saint of Dusk
59% of 165 decks
+35% synergy
High Synergy Cards
All That Glitters
67% of 8698 decks
+61% synergy
Ethereal Armor
64% of 8698 decks
+60% synergy
Killian, Ink Duelist
57% of 2712 decks
+56% synergy
Sage's Reverie
56% of 8698 decks
+54% synergy
Sram, Senior Edificer
60% of 8698 decks
+54% synergy
Hateful Eidolon
54% of 2712 decks
+53% synergy
Kor Spiritdancer
51% of 8698 decks
+49% synergy
Mesa Enchantress
52% of 8698 decks
+47% synergy
Lord Skitter's Blessing
47% of 2712 decks
+47% synergy
Pearl-Ear, Imperial Advisor
47% of 8698 decks
+45% synergy
Top Cards
Swords to Plowshares
57% of 8698 decks
-6% synergy
Fleeting Flight
53% of 359 decks
+40% synergy
Kaya's Ghostform
49% of 2712 decks
+45% synergy
Path to Exile
46% of 8698 decks
-0% synergy
Parasitic Impetus
45% of 2712 decks
+44% synergy
Minion's Return
45% of 2712 decks
+44% synergy
Winds of Rath
45% of 8698 decks
+42% synergy
Haunted Screen
44% of 18 decks
+37% synergy
Strength of the Harvest
44% of 2099 decks
+37% synergy
Wild Growth
44% of 2099 decks
+33% synergy
Creatures
Sanctum Weaver
43% of 2099 decks
+37% synergy
Setessan Champion
42% of 2099 decks
+38% synergy
Jukai Naturalist
39% of 2099 decks
+32% synergy
Sythis, Harvest's Hand
39% of 2099 decks
+31% synergy
Entity Tracker
39% of 470 decks
+30% synergy
Danitha Capashen, Paragon
38% of 8698 decks
+34% synergy
Zur the Enchanter
37% of 491 decks
+33% synergy
Eidolon of Blossoms
35% of 2099 decks
+31% synergy
Transcendent Envoy
34% of 8698 decks
+33% synergy
Archon of Sun's Grace
34% of 8698 decks
+30% synergy
Inquisitive Glimmer
34% of 579 decks
+22% synergy
Starfield Mystic
33% of 8698 decks
+30% synergy
Sanguine Syphoner
32% of 63 decks
+13% synergy
Whiskerquill Scribe
31% of 1900 decks
+31% synergy
Lurrus of the Dream-Den
29% of 2712 decks
+26% synergy
Satyr Enchanter
29% of 2099 decks
+24% synergy
Heartfire Hero
29% of 2217 decks
+28% synergy
Seedglaive Mentor
29% of 2217 decks
+28% synergy
Manifold Mouse
29% of 2217 decks
+28% synergy
Roughshod Duo
29% of 1831 decks
+28% synergy
Brambleguard Captain
29% of 2217 decks
+28% synergy
Destiny Spinner
29% of 2099 decks
+24% synergy
Ashiok's Reaper
28% of 2712 decks
+27% synergy
Kutzil, Malamet Exemplar
28% of 2099 decks
+9% synergy
Veteran Guardmouse
27% of 2217 decks
+26% synergy
Emberheart Challenger
26% of 2217 decks
+25% synergy
Wildsear, Scouring Maw
25% of 499 decks
+19% synergy
Light-Paws, Emperor's Voice
25% of 8698 decks
+24% synergy
Eidolon of Countless Battles
25% of 8698 decks
+24% synergy
Danitha, New Benalia's Light
24% of 2099 decks
+22% synergy
Heliod's Pilgrim
24% of 8698 decks
+23% synergy
Reyav, Master Smith
23% of 2217 decks
+20% synergy
Alela, Artful Provocateur
23% of 491 decks
+21% synergy
Tanglespan Lookout
22% of 2099 decks
+21% synergy
Umbra Mystic
22% of 8698 decks
+21% synergy
Bloodthirsty Conqueror
22% of 550 decks
+11% synergy
Neva, Stalked by Nightmares
22% of 2712 decks
+20% synergy
Icewind Elemental
21% of 24 decks
+16% synergy
Codsworth, Handy Helper
21% of 8698 decks
+17% synergy
Stormcatch Mentor
20% of 177 decks
+9% synergy
Chishiro, the Shattered Blade
20% of 645 decks
+19% synergy
Raging Battle Mouse
19% of 2217 decks
+19% synergy
Shay Cormac
19% of 2712 decks
+15% synergy
Grim Guardian
19% of 2712 decks
+17% synergy
Dazzling Angel
18% of 359 decks
-18% synergy
Kellan, the Fae-Blooded
18% of 2217 decks
+15% synergy
Doomwake Giant
18% of 2712 decks
+16% synergy
Yenna, Redtooth Regent
17% of 2099 decks
+13% synergy
Verduran Enchantress
17% of 2099 decks
+15% synergy
Herald of the Pantheon
17% of 2099 decks
+14% synergy
Instants
Void Rend
40% of 491 decks
+25% synergy
Generous Gift
32% of 8698 decks
+7% synergy
Counterspell
31% of 1109 decks
-12% synergy
Boros Charm
30% of 2217 decks
+5% synergy
Stab
29% of 24 decks
-15% synergy
Not Dead After All
29% of 2712 decks
+25% synergy
Might of the Meek
28% of 2217 decks
+27% synergy
Anguished Unmaking
28% of 2712 decks
+4% synergy
Bulk Up
27% of 172 decks
+17% synergy
Rabid Gnaw
26% of 1831 decks
+25% synergy
Negate
24% of 1109 decks
+1% synergy
Chaos Warp
22% of 2217 decks
-10% synergy
Beast Within
21% of 2099 decks
-17% synergy
Valley Rally
21% of 2217 decks
+21% synergy
Legion Leadership
20% of 2217 decks
+13% synergy
Heroic Intervention
20% of 2099 decks
-10% synergy
Dawn's Truce
19% of 8698 decks
+4% synergy
Inventory Management
18% of 2217 decks
+15% synergy
Sazacap's Brew
16% of 1831 decks
+14% synergy
Stroke of Midnight
16% of 8698 decks
+4% synergy
Enlightened Tutor
15% of 8698 decks
-2% synergy
Overprotect
15% of 1641 decks
+11% synergy
Despark
15% of 2712 decks
-0% synergy
Terminate
15% of 93 decks
-6% synergy
Dazzling Denial
14% of 743 decks
+11% synergy
Crumb and Get It
13% of 6545 decks
+12% synergy
Refute
13% of 209 decks
+6% synergy
Loran's Escape
13% of 8698 decks
+11% synergy
Teferi's Protection
13% of 8698 decks
-7% synergy
Fell the Profane
13% of 2712 decks
+1% synergy
Long River's Pull
12% of 1109 decks
+7% synergy
Karametra's Blessing
12% of 8698 decks
+12% synergy
An Offer You Can't Refuse
12% of 1109 decks
-9% synergy
Arcane Denial
12% of 1109 decks
-8% synergy
Pawpatch Formation
12% of 2099 decks
+10% synergy
Mortify
11% of 2712 decks
-1% synergy
Fracture
11% of 2712 decks
+4% synergy
Assassin's Trophy
11% of 71 decks
-19% synergy
Dovin's Veto
11% of 1109 decks
-8% synergy
Rebuff the Wicked
11% of 8698 decks
+9% synergy
Reprieve
11% of 8698 decks
+6% synergy
Shore Up
11% of 1109 decks
+9% synergy
High Stride
11% of 1579 decks
+10% synergy
Utter End
10% of 2712 decks
+4% synergy
Peerless Recycling
10% of 2099 decks
+7% synergy
Blacksmith's Skill
10% of 8698 decks
+8% synergy
Naya Charm
10% of 645 decks
+3% synergy
Crackling Doom
10% of 93 decks
+2% synergy
Wear // Tear
10% of 2217 decks
+2% synergy
Run Away Together
10% of 1109 decks
+8% synergy
Sorceries
Retether
33% of 8698 decks
+32% synergy
Open the Armory
32% of 8698 decks
+27% synergy
Cultivate
31% of 2099 decks
-15% synergy
Rampant Growth
24% of 2099 decks
-10% synergy
Farseek
22% of 2099 decks
-12% synergy
Blasphemous Act
21% of 2217 decks
-13% synergy
Sign in Blood
19% of 2712 decks
+10% synergy
Nature's Lore
17% of 2099 decks
-15% synergy
Ruinous Ultimatum
16% of 93 decks
-2% synergy
Austere Command
15% of 8698 decks
+2% synergy
Damn
14% of 2712 decks
-2% synergy
Kodama's Reach
14% of 2099 decks
-18% synergy
For the Common Good
13% of 1641 decks
+9% synergy
Playful Shove
13% of 1900 decks
+11% synergy
Night's Whisper
12% of 2712 decks
+3% synergy
Agate Assault
12% of 1900 decks
+11% synergy
Wear Down
12% of 2099 decks
+8% synergy
Felling Blow
12% of 69 decks
-2% synergy
Stump Stomp
10% of 645 decks
+2% synergy
Idyllic Tutor
10% of 8698 decks
+6% synergy
Single Combat
10% of 8698 decks
+8% synergy
Resurgent Belief
10% of 8698 decks
+8% synergy
Season of the Bold
10% of 2217 decks
+8% synergy
Brilliant Restoration
10% of 8698 decks
+7% synergy
Read the Bones
9% of 2712 decks
+2% synergy
Three Visits
9% of 2099 decks
-15% synergy
Preposterous Proportions
9% of 314 decks
+2% synergy
Demonic Tutor
9% of 2712 decks
-13% synergy
Longstalk Brawl
8% of 1645 decks
+8% synergy
Vandalblast
8% of 2217 decks
-8% synergy
Vindicate
8% of 2712 decks
+2% synergy
Blasphemous Edict
8% of 450 decks
-25% synergy
Sevinne's Reclamation
8% of 8698 decks
+1% synergy
Farewell
8% of 8698 decks
-6% synergy
Starfall Invocation
8% of 8698 decks
+4% synergy
Dewdrop Cure
8% of 8698 decks
+6% synergy
Toxic Deluge
8% of 2712 decks
-10% synergy
Divine Reckoning
7% of 8698 decks
+6% synergy
Splash Portal
7% of 870 decks
+5% synergy
Boltwave
7% of 172 decks
-11% synergy
Faithless Looting
7% of 2217 decks
-10% synergy
Enter the Enigma
6% of 508 decks
-1% synergy
Mythos of Snapdax
6% of 93 decks
+3% synergy
Witch's Mark
6% of 2217 decks
+5% synergy
Rootcast Apprenticeship
6% of 1296 decks
+2% synergy
Supreme Verdict
6% of 1109 decks
-8% synergy
Season of Gathering
6% of 2099 decks
+2% synergy
Explore
6% of 2099 decks
-3% synergy
Calamity of Cinders
6% of 1831 decks
+5% synergy
Asinine Antics
6% of 1109 decks
+5% synergy
Utility Artifacts
Quick-Draw Katana
44% of 135 decks
+11% synergy
Swiftfoot Boots
38% of 8698 decks
+10% synergy
Pearl Medallion
18% of 8698 decks
+16% synergy
Heaped Harvest
13% of 1579 decks
+10% synergy
Short Bow
13% of 5781 decks
+11% synergy
Thran Power Suit
12% of 8698 decks
+10% synergy
Celestial Armor
11% of 1790 decks
+5% synergy
Assassin Gauntlet
11% of 1109 decks
+9% synergy
Mask of Riddles
11% of 491 decks
+10% synergy
Lightning Greaves
10% of 8698 decks
-15% synergy
Helm of the Gods
10% of 8698 decks
+9% synergy
Diamond Pick-Axe
9% of 2217 decks
+6% synergy
Sunforger
8% of 2217 decks
+3% synergy
Wayfarer's Bauble
8% of 8698 decks
-2% synergy
Assimilation Aegis
7% of 1109 decks
+6% synergy
Sword of the Animist
7% of 8698 decks
+2% synergy
Leyline Axe
7% of 1790 decks
+0% synergy
Fountainport Bell
6% of 6838 decks
+5% synergy
Blackblade Reforged
6% of 8698 decks
+2% synergy
Banner of Kinship
6% of 1790 decks
-6% synergy
Sword of the Squeak
6% of 6545 decks
+4% synergy
Winged Boots
5% of 1109 decks
+4% synergy
Bolas's Citadel
5% of 2712 decks
-4% synergy
Robe of Stars
5% of 8698 decks
+4% synergy
Nettlecyst
5% of 8698 decks
+3% synergy
Enchantments
Glasswing Grace
43% of 2712 decks
+40% synergy
Ghoulish Impetus
43% of 2712 decks
+41% synergy
Timely Ward
43% of 8698 decks
+40% synergy
Cracked Skull
42% of 886 decks
+41% synergy
Unquestioned Authority
42% of 8698 decks
+40% synergy
Mantle of the Ancients
41% of 8698 decks
+38% synergy
Enchantress's Presence
41% of 2099 decks
+36% synergy
Darksteel Mutation
40% of 8698 decks
+34% synergy
Rancor
40% of 2099 decks
+35% synergy
Angelic Gift
39% of 8698 decks
+38% synergy
Utopia Sprawl
39% of 2099 decks
+31% synergy
Hyena Umbra
38% of 8698 decks
+37% synergy
Ancestral Mask
38% of 2099 decks
+36% synergy
Vampiric Link
37% of 2712 decks
+36% synergy
Fertile Ground
37% of 2099 decks
+33% synergy
War Squeak
36% of 1900 decks
+35% synergy
Spirit Mantle
35% of 8698 decks
+33% synergy
Nurgle's Rot
34% of 2712 decks
+34% synergy
Shardmage's Rescue
33% of 5067 decks
+32% synergy
Kenrith's Transformation
33% of 2099 decks
+27% synergy
Clawing Torment
33% of 2712 decks
+33% synergy
Bear Umbra
32% of 2099 decks
+27% synergy
Sticky Fingers
31% of 2217 decks
+29% synergy
Frantic Strength
31% of 460 decks
+28% synergy
Blacksmith's Talent
29% of 1900 decks
+27% synergy
Lion Umbra
28% of 2099 decks
+26% synergy
Songbirds' Blessing
28% of 8698 decks
+26% synergy
Daybreak Coronet
28% of 8698 decks
+26% synergy
Fungal Fortitude
28% of 2712 decks
+27% synergy
Angelic Destiny
28% of 8698 decks
+26% synergy
Grievous Wound
27% of 1711 decks
+24% synergy
Etali's Favor
27% of 2217 decks
+26% synergy
Snake Umbra
26% of 2099 decks
+23% synergy
Combat Research
26% of 1109 decks
+24% synergy
Shield of the Oversoul
24% of 2099 decks
+22% synergy
Phyrexian Arena
24% of 2712 decks
+9% synergy
Benevolent Blessing
24% of 8698 decks
+23% synergy
Armadillo Cloak
24% of 2099 decks
+22% synergy
Demonic Ruckus
23% of 2217 decks
+23% synergy
Battle Mastery
23% of 8698 decks
+22% synergy
Rune of Mortality
23% of 2712 decks
+22% synergy
Staggering Insight
23% of 1109 decks
+21% synergy
Spirit Link
23% of 8698 decks
+22% synergy
Sterling Grove
23% of 2099 decks
+15% synergy
Sigil of the Empty Throne
22% of 8698 decks
+19% synergy
Chains of Custody
22% of 8698 decks
+21% synergy
Aqueous Form
22% of 1109 decks
+18% synergy
Frontline Heroism
21% of 436 decks
+20% synergy
Unflinching Courage
21% of 2099 decks
+19% synergy
Strong Back
20% of 2099 decks
+18% synergy
Battles
Invasion of Theros
10% of 1109 decks
+9% synergy
Planeswalkers
Tamiyo, Field Researcher
14% of 374 decks
+10% synergy
Ral, Crackling Wit
10% of 177 decks
+3% synergy
Estrid, the Masked
9% of 374 decks
+8% synergy
Calix, Destiny's Hand
8% of 2099 decks
+6% synergy
Utility Lands
Hall of Heliod's Generosity
37% of 8698 decks
+30% synergy
Bojuka Bog
34% of 2712 decks
+4% synergy
Rogue's Passage
33% of 8698 decks
+13% synergy
Reliquary Tower
27% of 8698 decks
-2% synergy
Rockface Village
25% of 2217 decks
+24% synergy
Axgard Armory
17% of 2217 decks
+14% synergy
Slayers' Stronghold
16% of 2217 decks
+10% synergy
Kessig Wolf Run
15% of 645 decks
-1% synergy
Sunhome, Fortress of the Legion
13% of 2217 decks
+8% synergy
Oakhollow Village
13% of 2099 decks
+10% synergy
Contested Cliffs
13% of 645 decks
+12% synergy
Eiganjo, Seat of the Empire
12% of 8698 decks
+3% synergy
Restless Fortress
11% of 2712 decks
+8% synergy
War Room
11% of 8698 decks
+4% synergy
Nykthos, Shrine to Nyx
10% of 8698 decks
+5% synergy
Boseiju, Who Endures
9% of 2099 decks
-10% synergy
Vault of the Archangel
9% of 2712 decks
-2% synergy
Lupinflower Village
9% of 8698 decks
+7% synergy
Serra's Sanctum
8% of 8698 decks
+7% synergy
Castle Locthwain
8% of 2712 decks
+3% synergy
Lilypad Village
7% of 1109 decks
+5% synergy
Castle Ardenvale
7% of 8698 decks
+2% synergy
Mosswort Bridge
6% of 2099 decks
-4% synergy
Otawara, Soaring City
6% of 1109 decks
-11% synergy
Arena of Glory
6% of 2217 decks
-3% synergy
Arcane Lighthouse
6% of 8698 decks
+4% synergy
Gavony Township
6% of 2099 decks
-4% synergy
Roadside Reliquary
5% of 8698 decks
+5% synergy
Temple of the False God
5% of 8698 decks
-4% synergy
Restless Prairie
5% of 2099 decks
+3% synergy
Restless Bivouac
5% of 2217 decks
+2% synergy
Minas Tirith
5% of 8698 decks
-4% synergy
Mana Artifacts
Sol Ring
76% of 8698 decks
-9% synergy
Arcane Signet
66% of 8698 decks
-7% synergy
Orzhov Signet
54% of 2712 decks
+27% synergy
Talisman of Hierarchy
47% of 2712 decks
+22% synergy
Talisman of Dominance
40% of 491 decks
+9% synergy
Boros Signet
35% of 2217 decks
+12% synergy
Azorius Signet
33% of 1109 decks
+7% synergy
Dimir Signet
30% of 491 decks
+1% synergy
Talisman of Conviction
30% of 2217 decks
+7% synergy
Izzet Signet
29% of 177 decks
+1% synergy
Talisman of Progress
28% of 1109 decks
+5% synergy
Talisman of Creativity
18% of 177 decks
-11% synergy
Talisman of Indulgence
16% of 93 decks
-10% synergy
Mind Stone
16% of 8698 decks
-2% synergy
Fellwar Stone
14% of 8698 decks
-7% synergy
Thought Vessel
14% of 8698 decks
-3% synergy
Patchwork Banner
12% of 6838 decks
+2% synergy
Selesnya Signet
11% of 2099 decks
+3% synergy
Commander's Sphere
10% of 8698 decks
-5% synergy
Rakdos Signet
10% of 93 decks
-20% synergy
Simic Signet
9% of 374 decks
-5% synergy
Gruul Signet
9% of 645 decks
-3% synergy
Marble Diamond
9% of 8698 decks
+5% synergy
Talisman of Unity
8% of 2099 decks
+1% synergy
Charcoal Diamond
7% of 2712 decks
+2% synergy
Talisman of Resilience
7% of 71 decks
-5% synergy
Golgari Signet
7% of 71 decks
-6% synergy
Talisman of Impulse
7% of 645 decks
-2% synergy
Mardu Banner
6% of 93 decks
+5% synergy
Jeskai Banner
6% of 177 decks
+5% synergy
Talisman of Curiosity
5% of 374 decks
-7% synergy
Lands
Command Tower
62% of 8698 decks
-12% synergy
Isolated Chapel
59% of 2712 decks
+32% synergy
Caves of Koilos
58% of 2712 decks
+30% synergy
Arcane Sanctum
56% of 491 decks
+29% synergy
Canopy Vista
54% of 2099 decks
+18% synergy
Clifftop Retreat
53% of 2217 decks
+24% synergy
Mystic Monastery
53% of 177 decks
+26% synergy
Jungle Shrine
52% of 645 decks
+20% synergy
Seaside Citadel
51% of 374 decks
+25% synergy
Tainted Field
47% of 2712 decks
+34% synergy
Contaminated Landscape
45% of 491 decks
+32% synergy
Prairie Stream
43% of 1109 decks
+10% synergy
Shineshadow Snarl
43% of 2712 decks
+30% synergy
Cinder Glade
42% of 645 decks
+4% synergy
Sulfur Falls
42% of 177 decks
+11% synergy
Temple of Silence
42% of 2712 decks
+23% synergy
Glacial Fortress
41% of 1109 decks
+15% synergy
Sunpetal Grove
38% of 2099 decks
+14% synergy
Sunken Hollow
38% of 491 decks
+3% synergy
Orzhov Basilica
38% of 2712 decks
+22% synergy
Godless Shrine
37% of 2712 decks
-3% synergy
Vault of Champions
37% of 2712 decks
+11% synergy
Temple of Triumph
35% of 2217 decks
+19% synergy
Battlefield Forge
34% of 2217 decks
+9% synergy
Nomad Outpost
33% of 93 decks
+6% synergy
Fortified Village
32% of 2099 decks
+16% synergy
Fetid Heath
31% of 2712 decks
+21% synergy
Temple of Plenty
31% of 2099 decks
+18% synergy
Hinterland Harbor
31% of 374 decks
+3% synergy
Furycalm Snarl
31% of 2217 decks
+17% synergy
Sungrass Prairie
31% of 2099 decks
+19% synergy
Temple of Enlightenment
30% of 1109 decks
+14% synergy
Rootbound Crag
30% of 645 decks
+6% synergy
Drowned Catacomb
29% of 491 decks
+3% synergy
Sheltering Landscape
28% of 645 decks
+15% synergy
Boros Garrison
27% of 2217 decks
+13% synergy
Yavimaya Coast
27% of 374 decks
+0% synergy
Raffine's Tower
27% of 491 decks
-1% synergy
Adarkar Wastes
27% of 1109 decks
+9% synergy
Temple Garden
26% of 2099 decks
-14% synergy
Hushwood Verge
26% of 1039 decks
+7% synergy
Shattered Sanctum
26% of 2712 decks
+13% synergy
Temple of Epiphany
26% of 177 decks
+8% synergy
Shivan Reef
26% of 177 decks
-1% synergy
Brightclimb Pathway
26% of 2712 decks
+16% synergy
Sandsteppe Citadel
25% of 71 decks
-0% synergy
Rugged Prairie
25% of 2217 decks
+15% synergy
Exotic Orchard
25% of 8698 decks
-10% synergy
Jetmir's Garden
25% of 645 decks
-8% synergy
Brushland
25% of 2099 decks
+9% synergy