Guile + Flusterstorm
Guile
Flusterstorm
Requires
Guile must be on the battlefield.
Flusterstorm must be in hand.
You have an additional instant or sorcery card in hand.
Mana needed: plus enough mana to cast the instant or sorcery card
Steps
- Cast the additional instant or sorcery spell.
- Holding priority, cast Flusterstorm by paying , targeting the instant or sorcery.
- Flusterstorm's storm ability triggers, creating a copy of Flusterstorm for each spell you've cast before it this turn, with each copy targeting the original Flusterstorm.
- Resolve a copy of Flusterstorm, exiling Flusterstorm and allowing you to cast it from exile without paying its mana cost, targeting the instant or sorcery spell.
- Repeat from step 3.
Results
Infinite magecraft triggers. Infinite storm count.
The Mindskinner
0.10% of 2958 decks
3 decks
Top Commanders
Baral, Chief of Compliance
6.59% of 3689 decks
243 decks
Talrand, Sky Summoner
0.75% of 5322 decks
40 decks
Jalira, Master Polymorphist
1.67% of 1140 decks
19 decks
Jin-Gitaxias, Progress Tyrant
0.53% of 1890 decks
10 decks
Eluge, the Shoreless Sea
0.20% of 3942 decks
8 decks
Kinnan, Bonder Prodigy
0.04% of 12009 decks
5 decks
Lavinia, Azorius Renegade
0.23% of 2158 decks
5 decks
Grand Arbiter Augustin IV
0.06% of 7099 decks
4 decks
Taigam, Ojutai Master
0.30% of 1317 decks
4 decks
Orvar, the All-Form
0.04% of 7241 decks
3 decks
Bruvac the Grandiloquent
0.06% of 5029 decks
3 decks
Kira, Great Glass-Spinner
1.29% of 232 decks
3 decks
Thada Adel, Acquisitor
0.40% of 750 decks
3 decks
Urza, Lord High Artificer
0.02% of 12657 decks
3 decks
Sen Triplets
0.06% of 4870 decks
3 decks
Jin-Gitaxias
0.10% of 2925 decks
3 decks
Esika, God of the Tree
0.02% of 17767 decks
3 decks
New Cards
Homunculus Horde
60% of 5 decks
+54% synergy
Archmage of Runes
44% of 9 decks
+35% synergy
Don't Make a Sound
42% of 12 decks
+31% synergy
Get Out
36% of 14 decks
+30% synergy
Twist Reality
24% of 17 decks
+22% synergy
High Synergy Cards
Strix Serenade
61% of 117 decks
+54% synergy
Disallow
55% of 456 decks
+53% synergy
Sapphire Medallion
55% of 456 decks
+53% synergy
Rewind
55% of 456 decks
+52% synergy
Dovescape
51% of 35 decks
+51% synergy
Swan Song
68% of 456 decks
+51% synergy
Archmage Emeritus
59% of 444 decks
+51% synergy
Eluge, the Shoreless Sea
53% of 51 decks
+50% synergy
Force of Negation
59% of 455 decks
+50% synergy
Unwind
53% of 456 decks
+50% synergy
Top Cards
Counterspell
82% of 456 decks
+39% synergy
Rhystic Study
71% of 456 decks
+43% synergy
Cyclonic Rift
68% of 456 decks
+40% synergy
Swords to Plowshares
66% of 35 decks
+3% synergy
Fierce Guardianship
64% of 452 decks
+46% synergy
An Offer You Can't Refuse
64% of 423 decks
+43% synergy
Dovin's Veto
63% of 35 decks
+43% synergy
Arcane Denial
62% of 456 decks
+42% synergy
Negate
59% of 456 decks
+36% synergy
Brainstorm
57% of 456 decks
+36% synergy
Creatures
Coruscation Mage
75% of 4 decks
+68% synergy
Hullbreaker Horror
55% of 439 decks
+48% synergy
Drannith Magistrate
54% of 35 decks
+48% synergy
Birds of Paradise
52% of 23 decks
+25% synergy
Seedborn Muse
43% of 23 decks
+35% synergy
Jin-Gitaxias, Progress Tyrant
43% of 436 decks
+40% synergy
Talrand, Sky Summoner
43% of 456 decks
+38% synergy
Esper Sentinel
41% of 34 decks
+20% synergy
Wavebreak Hippocamp
40% of 453 decks
+38% synergy
Orcish Bowmasters
33% of 15 decks
+22% synergy
Haughty Djinn
33% of 405 decks
+31% synergy
Storm-Kiln Artist
32% of 28 decks
+23% synergy
Grand Arbiter Augustin IV
31% of 35 decks
+28% synergy
Thassa's Oracle
31% of 453 decks
+24% synergy
Niv-Mizzet, Parun
31% of 29 decks
+23% synergy
Bloom Tender
30% of 23 decks
+22% synergy
Notion Thief
29% of 31 decks
+22% synergy
Grand Abolisher
29% of 35 decks
+20% synergy
Delighted Halfling
29% of 14 decks
+14% synergy
Consecrated Sphinx
28% of 456 decks
+23% synergy
Dockside Extortionist
28% of 29 decks
+15% synergy
Snapcaster Mage
27% of 456 decks
+25% synergy
Faerie Mastermind
26% of 317 decks
+19% synergy
Harbinger of the Seas
26% of 125 decks
+24% synergy
Llanowar Elves
26% of 23 decks
+5% synergy
Laboratory Maniac
26% of 456 decks
+21% synergy
Aven Mindcensor
26% of 35 decks
+21% synergy
Murmuring Mystic
25% of 455 decks
+22% synergy
Archon of Emeria
23% of 35 decks
+20% synergy
Thunderclap Drake
22% of 135 decks
+19% synergy
Mystic Snake
22% of 23 decks
+20% synergy
Thrasios, Triton Hero
22% of 23 decks
+19% synergy
Manglehorn
22% of 23 decks
+19% synergy
Nyxbloom Ancient
22% of 23 decks
+18% synergy
Koma, Cosmos Serpent
22% of 23 decks
+16% synergy
Elvish Mystic
22% of 23 decks
+4% synergy
Eternal Witness
22% of 23 decks
+1% synergy
Lullmage Mentor
22% of 456 decks
+21% synergy
Hydroelectric Specimen
21% of 89 decks
+14% synergy
Baral, Chief of Compliance
21% of 456 decks
+18% synergy
Spellseeker
20% of 455 decks
+17% synergy
Opposition Agent
19% of 31 decks
+12% synergy
Dauthi Voidwalker
19% of 31 decks
+11% synergy
Tishana's Tidebinder
19% of 171 decks
+17% synergy
Malevolent Hermit
19% of 442 decks
+18% synergy
Boromir, Warden of the Tower
19% of 16 decks
+13% synergy
Endurance
17% of 23 decks
+15% synergy
Fyndhorn Elves
17% of 23 decks
+4% synergy
Dualcaster Mage
17% of 29 decks
+12% synergy
Imperial Recruiter
17% of 29 decks
+11% synergy
Instants
Mana Drain
69% of 456 decks
+54% synergy
Force of Will
61% of 456 decks
+50% synergy
Worldly Tutor
57% of 23 decks
+42% synergy
Mystical Tutor
55% of 456 decks
+40% synergy
Enlightened Tutor
49% of 35 decks
+31% synergy
Mana Leak
47% of 456 decks
+45% synergy
Pact of Negation
46% of 456 decks
+39% synergy
Permission Denied
45% of 11 decks
+42% synergy
Silence
43% of 35 decks
+36% synergy
Vampiric Tutor
42% of 31 decks
+24% synergy
Pongify
41% of 456 decks
+29% synergy
Tale's End
40% of 454 decks
+39% synergy
Ertai's Scorn
39% of 405 decks
+38% synergy
Deflecting Swat
38% of 29 decks
+22% synergy
Dispel
38% of 456 decks
+33% synergy
High Tide
37% of 456 decks
+33% synergy
Dark Ritual
35% of 31 decks
+13% synergy
Muddle the Mixture
35% of 456 decks
+30% synergy
Defabricate
35% of 384 decks
+34% synergy
Wash Away
35% of 439 decks
+33% synergy
Mental Misstep
35% of 456 decks
+29% synergy
Cryptic Command
35% of 456 decks
+33% synergy
Rapid Hybridization
34% of 456 decks
+25% synergy
Narset's Reversal
33% of 455 decks
+29% synergy
Bane's Contingency
32% of 417 decks
+32% synergy
Spell Pierce
32% of 456 decks
+28% synergy
Dramatic Reversal
31% of 456 decks
+26% synergy
Sink into Stupor
31% of 117 decks
+17% synergy
Dissipate
31% of 456 decks
+30% synergy
Flare of Denial
30% of 128 decks
+27% synergy
Disdainful Stroke
30% of 456 decks
+29% synergy
Archmage's Charm
30% of 455 decks
+28% synergy
Demonic Consultation
29% of 31 decks
+25% synergy
Deadly Rollick
29% of 31 decks
+18% synergy
Teferi's Protection
29% of 35 decks
+9% synergy
Path to Exile
29% of 35 decks
-17% synergy
Saw It Coming
28% of 445 decks
+26% synergy
Frantic Search
28% of 456 decks
+16% synergy
Mystic Confluence
28% of 456 decks
+25% synergy
Three Steps Ahead
27% of 141 decks
+23% synergy
Veil of Summer
26% of 23 decks
+20% synergy
Tainted Pact
26% of 31 decks
+22% synergy
Reality Shift
26% of 456 decks
+17% synergy
Render Silent
23% of 35 decks
+20% synergy
Drown in the Loch
23% of 31 decks
+16% synergy
Dissolve
22% of 456 decks
+21% synergy
Force of Vigor
22% of 23 decks
+18% synergy
Crop Rotation
22% of 23 decks
+12% synergy
Beast Within
22% of 23 decks
-17% synergy
Foil
21% of 456 decks
+20% synergy
Sorceries
Demonic Tutor
45% of 31 decks
+23% synergy
Ponder
44% of 456 decks
+31% synergy
Windfall
38% of 456 decks
+25% synergy
Finale of Devastation
35% of 23 decks
+26% synergy
Preordain
33% of 456 decks
+22% synergy
Supreme Verdict
31% of 35 decks
+17% synergy
Cultivate
30% of 23 decks
-16% synergy
Solve the Equation
29% of 444 decks
+24% synergy
Approach of the Second Sun
29% of 35 decks
+25% synergy
Jeska's Will
29% of 28 decks
+11% synergy
Merchant Scroll
26% of 456 decks
+24% synergy
Faithless Looting
24% of 29 decks
+7% synergy
Treasure Cruise
23% of 456 decks
+18% synergy
Eldritch Evolution
22% of 23 decks
+17% synergy
Gitaxian Probe
20% of 456 decks
+14% synergy
Reanimate
19% of 31 decks
+4% synergy
Farewell
19% of 32 decks
+5% synergy
Sea Gate Restoration
18% of 449 decks
+13% synergy
Fabricate
18% of 456 decks
+11% synergy
Neoform
17% of 23 decks
+12% synergy
Farseek
17% of 23 decks
-17% synergy
Rampant Growth
17% of 23 decks
-17% synergy
Gamble
17% of 29 decks
+7% synergy
Blasphemous Act
17% of 29 decks
-16% synergy
Imperial Seal
16% of 31 decks
+10% synergy
Enter the Infinite
15% of 456 decks
+14% synergy
Idyllic Tutor
14% of 35 decks
+9% synergy
Heat Shimmer
14% of 29 decks
+13% synergy
Grapeshot
14% of 29 decks
+10% synergy
Wheel of Fortune
14% of 29 decks
+9% synergy
Mana Geyser
14% of 29 decks
+7% synergy
Green Sun's Zenith
13% of 23 decks
+7% synergy
Nature's Lore
13% of 23 decks
-19% synergy
Scheming Symmetry
13% of 31 decks
+11% synergy
Praetor's Grasp
13% of 31 decks
+10% synergy
Grim Tutor
13% of 31 decks
+8% synergy
Toxic Deluge
13% of 31 decks
-4% synergy
Transmogrify
11% of 28 decks
+10% synergy
Expressive Iteration
11% of 28 decks
+4% synergy
Serum Visions
11% of 456 decks
+6% synergy
Finale of Promise
10% of 29 decks
+10% synergy
Twinflame
10% of 29 decks
+7% synergy
Time Warp
10% of 456 decks
+8% synergy
Lórien Revealed
10% of 221 decks
+6% synergy
Curse of the Swine
10% of 456 decks
+5% synergy
Doomsday
10% of 31 decks
+9% synergy
Tendrils of Agony
10% of 31 decks
+9% synergy
Thoughtseize
10% of 31 decks
+9% synergy
Extract Brain
10% of 31 decks
+9% synergy
Chain of Smog
10% of 31 decks
+8% synergy
Utility Artifacts
Isochron Scepter
48% of 456 decks
+45% synergy
Sensei's Divining Top
27% of 456 decks
+21% synergy
The One Ring
21% of 303 decks
+12% synergy
The Magic Mirror
20% of 454 decks
+19% synergy
Lightning Greaves
19% of 456 decks
-7% synergy
Mindsplice Apparatus
16% of 339 decks
+14% synergy
Wishclaw Talisman
16% of 31 decks
+11% synergy
Swiftfoot Boots
15% of 456 decks
-13% synergy
Bolas's Citadel
13% of 31 decks
+4% synergy
Vexing Bauble
12% of 95 decks
+10% synergy
Pyrite Spellbomb
10% of 29 decks
+10% synergy
Winter Moon
10% of 128 decks
+9% synergy
Aetherflux Reservoir
9% of 456 decks
+6% synergy
Wayfarer's Bauble
8% of 456 decks
-2% synergy
Primal Amulet
7% of 456 decks
+6% synergy
Cursed Totem
7% of 456 decks
+6% synergy
Glamdring
6% of 228 decks
+5% synergy
Library of Leng
6% of 456 decks
+5% synergy
Grafdigger's Cage
5% of 456 decks
+4% synergy
Enchantments
Smothering Tithe
57% of 35 decks
+32% synergy
Mystic Remora
49% of 456 decks
+31% synergy
Propaganda
34% of 456 decks
+22% synergy
Teferi's Ageless Insight
30% of 449 decks
+25% synergy
Underworld Breach
28% of 29 decks
+21% synergy
Carpet of Flowers
26% of 23 decks
+22% synergy
Back to Basics
25% of 456 decks
+24% synergy
Counterbalance
23% of 456 decks
+22% synergy
Ghostly Prison
23% of 35 decks
+11% synergy
Telepathy
23% of 456 decks
+22% synergy
Jace's Sanctum
23% of 456 decks
+21% synergy
Possibility Storm
21% of 29 decks
+20% synergy
Rule of Law
20% of 35 decks
+18% synergy
Aura of Silence
20% of 35 decks
+18% synergy
Unable to Scream
18% of 17 decks
+13% synergy
Utopia Sprawl
17% of 23 decks
+10% synergy
Sylvan Library
17% of 23 decks
+6% synergy
Shark Typhoon
17% of 450 decks
+15% synergy
Rest in Peace
17% of 35 decks
+15% synergy
Blind Obedience
17% of 35 decks
+10% synergy
Case of the Ransacked Lab
16% of 148 decks
+14% synergy
Nether Void
16% of 31 decks
+16% synergy
Metallurgic Summonings
16% of 456 decks
+14% synergy
Authority of the Consuls
14% of 35 decks
+10% synergy
Thousand-Year Storm
14% of 29 decks
+9% synergy
Skrelv's Hive
14% of 22 decks
+10% synergy
Wild Growth
13% of 23 decks
+2% synergy
Bitterblossom
13% of 31 decks
+9% synergy
Necropotence
13% of 31 decks
+8% synergy
Amphibian Downpour
12% of 95 decks
+8% synergy
Solemnity
11% of 35 decks
+11% synergy
Deafening Silence
11% of 35 decks
+9% synergy
Omniscience
11% of 456 decks
+9% synergy
Mana Echoes
10% of 29 decks
+9% synergy
Black Market Connections
10% of 29 decks
-1% synergy
Imprisoned in the Moon
10% of 456 decks
+6% synergy
Blood Funnel
10% of 31 decks
+10% synergy
Animate Dead
10% of 31 decks
+0% synergy
Phyrexian Arena
10% of 31 decks
-5% synergy
Leyline of Anticipation
10% of 456 decks
+5% synergy
Stormchaser's Talent
9% of 32 decks
+6% synergy
Wizard Class
9% of 442 decks
+5% synergy
Monologue Tax
9% of 34 decks
+7% synergy
Land Tax
9% of 35 decks
+2% synergy
As Foretold
7% of 456 decks
+5% synergy
Eaten by Piranhas
7% of 163 decks
+5% synergy
Ominous Seas
6% of 450 decks
+4% synergy
Declaration of Naught
5% of 456 decks
+5% synergy
Training Grounds
5% of 456 decks
+2% synergy
Battles
Invasion of Ikoria
35% of 17 decks
+30% synergy
Planeswalkers
Teferi, Time Raveler
34% of 35 decks
+28% synergy
Narset, Parter of Veils
31% of 455 decks
+26% synergy
Jace, Wielder of Mysteries
20% of 455 decks
+17% synergy
Professor Onyx
19% of 31 decks
+18% synergy
Ashiok, Dream Render
16% of 31 decks
+12% synergy
Teferi, Temporal Pilgrim
10% of 384 decks
+8% synergy
Dovin, Hand of Control
9% of 35 decks
+8% synergy
Jace, the Mind Sculptor
8% of 456 decks
+6% synergy
Teferi, Master of Time
6% of 449 decks
+4% synergy
Jace, Unraveler of Secrets
5% of 456 decks
+4% synergy
Utility Lands
Mystic Sanctuary
61% of 454 decks
+49% synergy
Reliquary Tower
60% of 456 decks
+30% synergy
Boseiju, Who Endures
43% of 23 decks
+24% synergy
Otawara, Soaring City
40% of 436 decks
+23% synergy
Castle Vantress
26% of 454 decks
+22% synergy
Rivendell
21% of 256 decks
+16% synergy
Ancient Tomb
21% of 456 decks
+11% synergy
Urza's Saga
20% of 443 decks
+13% synergy
Alchemist's Refuge
17% of 23 decks
+11% synergy
Nykthos, Shrine to Nyx
16% of 456 decks
+11% synergy
Takenuma, Abandoned Mire
13% of 30 decks
+3% synergy
Riptide Laboratory
13% of 456 decks
+11% synergy
Gaea's Cradle
13% of 23 decks
+7% synergy
Bojuka Bog
13% of 31 decks
-17% synergy
Eiganjo, Seat of the Empire
12% of 32 decks
+3% synergy
Maze of Ith
12% of 456 decks
+9% synergy
Archway of Innovation
12% of 77 decks
+6% synergy
War Room
12% of 448 decks
+5% synergy
Lonely Sandbar
11% of 456 decks
+8% synergy
Academy Ruins
11% of 456 decks
+7% synergy
Halimar Depths
11% of 456 decks
+8% synergy
Minamo, School at Water's Edge
11% of 456 decks
+6% synergy
Strip Mine
9% of 456 decks
+6% synergy
Ancient Den
9% of 35 decks
+3% synergy
Hall of Heliod's Generosity
9% of 35 decks
+2% synergy
Cephalid Coliseum
8% of 456 decks
+6% synergy
Tolaria West
8% of 456 decks
+7% synergy
Hall of Storm Giants
7% of 442 decks
+6% synergy
Temple of the False God
6% of 456 decks
-4% synergy
Sunken Palace
5% of 77 decks
+3% synergy
Boseiju, Who Shelters All
5% of 456 decks
+4% synergy
Terrain Generator
5% of 456 decks
+4% synergy
Mana Artifacts
Sol Ring
89% of 456 decks
+5% synergy
Arcane Signet
67% of 454 decks
-5% synergy
Selesnya Signet
60% of 5 decks
+51% synergy
Talisman of Indulgence
58% of 12 decks
+32% synergy
Talisman of Dominance
55% of 31 decks
+24% synergy
Talisman of Hierarchy
50% of 10 decks
+25% synergy
Talisman of Progress
46% of 35 decks
+23% synergy
Thought Vessel
44% of 456 decks
+28% synergy
Talisman of Curiosity
43% of 23 decks
+31% synergy
Dimir Signet
42% of 31 decks
+12% synergy
Rakdos Signet
42% of 12 decks
+12% synergy
Talisman of Creativity
41% of 29 decks
+12% synergy
Azorius Signet
40% of 35 decks
+14% synergy
Simic Signet
39% of 23 decks
+25% synergy
Izzet Signet
34% of 29 decks
+6% synergy
Mana Crypt
28% of 456 decks
+19% synergy
Chrome Mox
21% of 456 decks
+14% synergy
Mind Stone
20% of 456 decks
+2% synergy
Midnight Clock
20% of 454 decks
+15% synergy
Jeweled Lotus
19% of 448 decks
+13% synergy
Mana Vault
19% of 456 decks
+12% synergy
Fellwar Stone
19% of 456 decks
-2% synergy
Decanter of Endless Water
18% of 417 decks
+14% synergy
Mox Amber
18% of 456 decks
+13% synergy
Throne of Eldraine
16% of 208 decks
+14% synergy
Sky Diamond
16% of 456 decks
+11% synergy
Lotus Petal
15% of 456 decks
+9% synergy
Mox Opal
13% of 456 decks
+8% synergy
Extraplanar Lens
12% of 456 decks
+12% synergy
Mox Diamond
12% of 456 decks
+7% synergy
Misleading Signpost
11% of 208 decks
+9% synergy
Commander's Sphere
9% of 456 decks
-6% synergy
Basalt Monolith
8% of 456 decks
+5% synergy
Gilded Lotus
8% of 456 decks
+4% synergy
Grim Monolith
7% of 456 decks
+5% synergy
Crystal Skull, Isu Spyglass
6% of 64 decks
+2% synergy
Caged Sun
6% of 456 decks
+4% synergy
Sceptre of Eternal Glory
5% of 387 decks
+4% synergy
Lands
Watery Grave
81% of 31 decks
+40% synergy
Breeding Pool
78% of 23 decks
+37% synergy
Hallowed Fountain
77% of 35 decks
+36% synergy
Steam Vents
72% of 29 decks
+33% synergy
Sacred Foundry
62% of 8 decks
+26% synergy
Raffine's Tower
56% of 9 decks
+28% synergy
Morphic Pool
55% of 31 decks
+29% synergy
Rejuvenating Springs
52% of 23 decks
+24% synergy
Taiga
50% of 8 decks
+37% synergy
Bayou
50% of 6 decks
+36% synergy
Xander's Lounge
50% of 12 decks
+22% synergy
Zagoth Triome
50% of 6 decks
+19% synergy
Blood Crypt
50% of 12 decks
+11% synergy
Godless Shrine
50% of 10 decks
+9% synergy
Sea of Clouds
49% of 35 decks
+22% synergy
Tropical Island
48% of 23 decks
+34% synergy
Underground River
45% of 31 decks
+26% synergy
Yavimaya Coast
43% of 23 decks
+17% synergy
Hinterland Harbor
43% of 23 decks
+16% synergy
Tundra
43% of 35 decks
+29% synergy
Undercity Sewers
43% of 7 decks
+29% synergy
Training Center
43% of 28 decks
+15% synergy
Underground Sea
42% of 31 decks
+28% synergy
Vault of Champions
40% of 10 decks
+14% synergy
Drowned Catacomb
39% of 31 decks
+13% synergy
Shivan Reef
38% of 29 decks
+11% synergy
Plateau
38% of 8 decks
+25% synergy
Spire Garden
38% of 8 decks
+13% synergy
Ketria Triome
38% of 8 decks
+5% synergy
Stomping Ground
38% of 8 decks
-4% synergy
Thundering Falls
36% of 11 decks
+25% synergy
Flooded Grove
35% of 23 decks
+23% synergy
Dreamroot Cascade
35% of 23 decks
+16% synergy
Volcanic Island
34% of 29 decks
+21% synergy
Sulfur Falls
34% of 29 decks
+4% synergy
Badlands
33% of 12 decks
+20% synergy
Glacial Fortress
31% of 35 decks
+6% synergy
Cascade Bluffs
31% of 29 decks
+19% synergy
Scrubland
30% of 10 decks
+16% synergy
Deserted Beach
29% of 34 decks
+13% synergy
Adarkar Wastes
29% of 35 decks
+11% synergy
Izzet Boilerworks
28% of 29 decks
+11% synergy
Shipwreck Marsh
26% of 31 decks
+7% synergy
Azorius Chancery
26% of 35 decks
+11% synergy
Prairie Stream
26% of 35 decks
-8% synergy
Waterlogged Grove
22% of 23 decks
+14% synergy
Stormcarved Coast
21% of 28 decks
+4% synergy
Mystic Gate
20% of 35 decks
+14% synergy
Misty Rainforest
20% of 456 decks
+8% synergy
Flooded Strand
20% of 456 decks
+9% synergy