Guile, Sonic Soldier (Commander)

Original Name:

Immard, the StormcleaverImmard, the Stormcleaver

Background image for How Fun Are All of the Jeskai Commanders?
Benjamin Levin
Oct 21, 2025
How Fun Are All of the Jeskai Commanders?
There are dozens of Jeskai commanders available now, but which ones are fun to play? Let's break them all down.
Deck Filters
Cardsphere
Archidekt
Commander Spellbook
Moxfield
Scryfall
MTGStocks
Firebender Ascension
18%inclusion19 decks105 decks
17%synergy
Airship Engine Room
3.8%inclusion4 decks105 decks
2%synergy
North Pole Gates
3.8%inclusion4 decks105 decks
2%synergy
Sun-Blessed Peak
3.8%inclusion4 decks105 decks
2%synergy
Captain America, Super-Soldier
3.3%inclusion1 decks30 decks
3%synergy
High Synergy Cards
Contentious Plan
47%inclusion522 decks1.11K decks
44%synergy
Tezzeret's Gambit
54%inclusion595 decks1.11K decks
44%synergy
Flux Channeler
46%inclusion513 decks1.11K decks
40%synergy
Karn's Bastion
51%inclusion564 decks1.11K decks
39%synergy
Norn's Choirmaster
40%inclusion440 decks1.11K decks
38%synergy
Thrummingbird
45%inclusion499 decks1.11K decks
37%synergy
Experimental Augury
43%inclusion481 decks1.11K decks
36%synergy
Assemble the Legion
38%inclusion427 decks1.11K decks
36%synergy
Inexorable Tide
40%inclusion446 decks1.11K decks
35%synergy
Commander Mustard
35%inclusion391 decks1.11K decks
35%synergy
Top Cards
Swords to Plowshares
62%inclusion684 decks1.11K decks
-7%synergy
Path to Exile
51%inclusion571 decks1.11K decks
2%synergy
Swiftfoot Boots
48%inclusion533 decks1.11K decks
24%synergy
Boros Charm
43%inclusion477 decks1.11K decks
22%synergy
Counterspell
43%inclusion473 decks1.11K decks
8%synergy
Blasphemous Act
38%inclusion418 decks1.11K decks
15%synergy
Grateful Apparition
37%inclusion414 decks1.11K decks
33%synergy
Lae'zel, Vlaakith's Champion
36%inclusion404 decks1.11K decks
31%synergy
Skystrike Officer
35%inclusion390 decks1.11K decks
35%synergy
Rescue Retriever
35%inclusion385 decks1.11K decks
34%synergy
Game Changers
Smothering Tithe
18%inclusion200 decks1.11K decks
-1%synergy
Rhystic Study
17%inclusion188 decks1.11K decks
-3%synergy
Teferi's Protection
15%inclusion162 decks1.11K decks
0%synergy
Cyclonic Rift
14%inclusion156 decks1.11K decks
-4%synergy
Jeska's Will
12%inclusion133 decks1.11K decks
-2%synergy
Enlightened Tutor
12%inclusion131 decks1.11K decks
-4%synergy
Fierce Guardianship
10%inclusion116 decks1.11K decks
-5%synergy
Mystical Tutor
5.1%inclusion57 decks1.11K decks
-6%synergy
Creatures
Harbin, Vanguard Aviator
34%inclusion373 decks1.11K decks
33%synergy
Metropolis Angel
32%inclusion356 decks1.11K decks
32%synergy
Valiant Veteran
31%inclusion347 decks1.11K decks
31%synergy
Pippin, Guard of the Citadel
31%inclusion346 decks1.11K decks
29%synergy
Captain of the Watch
30%inclusion335 decks1.11K decks
30%synergy
Siege Veteran
30%inclusion334 decks1.11K decks
30%synergy
Esper Sentinel
30%inclusion328 decks1.11K decks
10%synergy
Myrel, Shield of Argive
29%inclusion321 decks1.11K decks
28%synergy
Dreamtide Whale
27%inclusion250 decks934 decks
21%synergy
Tekuthal, Inquiry Dominus
27%inclusion296 decks1.11K decks
20%synergy
Cayth, Famed Mechanist
26%inclusion244 decks941 decks
17%synergy
Baird, Argivian Recruiter
25%inclusion274 decks1.11K decks
24%synergy
Aurelia, the Warleader
24%inclusion268 decks1.11K decks
20%synergy
Yotian Tactician
24%inclusion266 decks1.11K decks
24%synergy
Metastatic Evangel
24%inclusion223 decks938 decks
21%synergy
Keeper of the Accord
23%inclusion258 decks1.11K decks
21%synergy
Field Marshal
23%inclusion253 decks1.11K decks
23%synergy
Tajic, Legion's Edge
23%inclusion252 decks1.11K decks
22%synergy
Bastion Protector
22%inclusion249 decks1.11K decks
16%synergy
Ballyrush Banneret
21%inclusion231 decks1.11K decks
21%synergy
Daru Warchief
20%inclusion222 decks1.11K decks
20%synergy
Craig Boone, Novac Guard
20%inclusion206 decks1.05K decks
19%synergy
Patrolling Peacemaker
19%inclusion56 decks289 decks
2%synergy
Preeminent Captain
19%inclusion211 decks1.11K decks
19%synergy
Kilo, Apogee Mind
18%inclusion60 decks338 decks
7%synergy
Solemn Simulacrum
17%inclusion192 decks1.11K decks
0%synergy
Odric, Master Tactician
17%inclusion192 decks1.11K decks
16%synergy
Deepglow Skate
17%inclusion186 decks1.11K decks
10%synergy
Akki Battle Squad
16%inclusion176 decks1.11K decks
15%synergy
Zethi, Arcane Blademaster
15%inclusion171 decks1.11K decks
15%synergy
Boromir, Warden of the Tower
14%inclusion160 decks1.11K decks
10%synergy
Karlach, Fury of Avernus
14%inclusion158 decks1.11K decks
13%synergy
Darien, King of Kjeldor
14%inclusion154 decks1.11K decks
14%synergy
Firemane Commando
14%inclusion153 decks1.11K decks
13%synergy
Cathar Commando
13%inclusion149 decks1.11K decks
11%synergy
Coppercoat Vanguard
13%inclusion146 decks1.11K decks
10%synergy
Combat Celebrant
13%inclusion142 decks1.11K decks
5%synergy
Roaming Throne
13%inclusion139 decks1.11K decks
7%synergy
Mentor of the Meek
12%inclusion133 decks1.11K decks
8%synergy
Filigree Vector
11%inclusion127 decks1.11K decks
9%synergy
Iroas, God of Victory
11%inclusion125 decks1.11K decks
8%synergy
Lightning, Army of One
11%inclusion44 decks409 decks
10%synergy
Coretapper
10%inclusion115 decks1.11K decks
7%synergy
Soulherder
10%inclusion114 decks1.11K decks
8%synergy
Swiftblade Vindicator
10%inclusion110 decks1.11K decks
10%synergy
Surge Conductor
9.3%inclusion27 decks289 decks
-5%synergy
Guildpact Informant
9.3%inclusion103 decks1.11K decks
9%synergy
Catapult Master
9.2%inclusion102 decks1.11K decks
9%synergy
Daxos of Meletis
9.0%inclusion100 decks1.11K decks
9%synergy
Brago, King Eternal
8.8%inclusion98 decks1.11K decks
7%synergy
Instants
Volt Charge
33%inclusion366 decks1.11K decks
32%synergy
Generous Gift
32%inclusion354 decks1.11K decks
10%synergy
Steady Progress
29%inclusion321 decks1.11K decks
28%synergy
Chaos Warp
29%inclusion317 decks1.11K decks
6%synergy
Dovin's Veto
26%inclusion290 decks1.11K decks
8%synergy
Serum Snare
25%inclusion281 decks1.11K decks
24%synergy
Ripples of Potential
23%inclusion257 decks1.11K decks
15%synergy
Unbounded Potential
19%inclusion214 decks1.11K decks
19%synergy
Negate
19%inclusion211 decks1.11K decks
3%synergy
Unbreakable Formation
17%inclusion189 decks1.11K decks
10%synergy
Protect the Negotiators
15%inclusion172 decks1.11K decks
15%synergy
Reject Imperfection
15%inclusion167 decks1.11K decks
14%synergy
Brainstorm
15%inclusion167 decks1.11K decks
-5%synergy
Fuel for the Cause
14%inclusion154 decks1.11K decks
13%synergy
Arcane Denial
14%inclusion154 decks1.11K decks
-2%synergy
Akroma's Will
13%inclusion148 decks1.11K decks
2%synergy
Deflecting Palm
13%inclusion147 decks1.11K decks
8%synergy
Flawless Maneuver
12%inclusion137 decks1.11K decks
1%synergy
Deflecting Swat
12%inclusion131 decks1.11K decks
-2%synergy
Call the Coppercoats
11%inclusion127 decks1.11K decks
8%synergy
Lightning Bolt
11%inclusion121 decks1.11K decks
3%synergy
An Offer You Can't Refuse
10%inclusion114 decks1.11K decks
-9%synergy
Ephemerate
10%inclusion113 decks1.11K decks
5%synergy
Stroke of Midnight
9.5%inclusion105 decks1.11K decks
0%synergy
Legion Leadership
9.1%inclusion86 decks940 decks
3%synergy
Radstorm
8.1%inclusion90 decks1.11K decks
7%synergy
Wear // Tear
7.7%inclusion86 decks1.11K decks
1%synergy
Mana Drain
7.5%inclusion83 decks1.11K decks
-3%synergy
Savage Beating
6.8%inclusion75 decks1.11K decks
6%synergy
Ghostly Flicker
6.8%inclusion75 decks1.11K decks
4%synergy
Opt
6.7%inclusion74 decks1.11K decks
-6%synergy
Cloudshift
6.4%inclusion71 decks1.11K decks
4%synergy
Great Train Heist
6.2%inclusion62 decks1K decks
4%synergy
Momentary Blink
6.1%inclusion68 decks1.11K decks
4%synergy
Entrapment Maneuver
5.9%inclusion66 decks1.11K decks
6%synergy
Dawn's Truce
5.9%inclusion52 decks878 decks
-1%synergy
Eerie Interlude
5.5%inclusion61 decks1.11K decks
3%synergy
Abrade
5.3%inclusion59 decks1.11K decks
-1%synergy
Sorceries
Supreme Verdict
27%inclusion299 decks1.11K decks
13%synergy
Martial Coup
22%inclusion241 decks1.11K decks
19%synergy
Vivisurgeon's Insight
19%inclusion214 decks1.11K decks
19%synergy
Seize the Day
18%inclusion195 decks1.11K decks
15%synergy
Relentless Assault
15%inclusion170 decks1.11K decks
13%synergy
Austere Command
14%inclusion157 decks1.11K decks
2%synergy
Vandalblast
13%inclusion149 decks1.11K decks
4%synergy
Farewell
12%inclusion132 decks1.11K decks
-3%synergy
Overpowering Attack
11%inclusion101 decks915 decks
9%synergy
Full Throttle
10%inclusion59 decks585 decks
7%synergy
Finale of Glory
10%inclusion111 decks1.11K decks
9%synergy
Ponder
10%inclusion110 decks1.11K decks
-6%synergy
Deploy to the Front
8.6%inclusion95 decks1.11K decks
8%synergy
Angelfire Ignition
8.1%inclusion90 decks1.11K decks
7%synergy
Damning Verdict
8.0%inclusion89 decks1.11K decks
6%synergy
Distant Melody
8.0%inclusion89 decks1.11K decks
6%synergy
Preordain
7.7%inclusion86 decks1.11K decks
-6%synergy
Wanderer's Strike
7.7%inclusion86 decks1.11K decks
8%synergy
Response // Resurgence
7.0%inclusion78 decks1.11K decks
6%synergy
Open the Armory
6.9%inclusion77 decks1.11K decks
2%synergy
World at War
6.8%inclusion76 decks1.11K decks
5%synergy
Wrath of God
6.1%inclusion68 decks1.11K decks
3%synergy
Utility Artifacts
Sword of Truth and Justice
28%inclusion307 decks1.11K decks
25%synergy
Strionic Resonator
26%inclusion284 decks1.11K decks
23%synergy
Lightning Greaves
22%inclusion247 decks1.11K decks
-2%synergy
Gavel of the Righteous
21%inclusion234 decks1.11K decks
19%synergy
Lux Cannon
17%inclusion189 decks1.11K decks
13%synergy
Insight Engine
17%inclusion48 decks289 decks
2%synergy
The Ozolith
16%inclusion177 decks1.11K decks
13%synergy
Inspirit, Flagship Vessel
15%inclusion43 decks294 decks
5%synergy
Contagion Clasp
13%inclusion144 decks1.11K decks
12%synergy
Panharmonicon
12%inclusion133 decks1.11K decks
3%synergy
Contagion Engine
12%inclusion131 decks1.11K decks
11%synergy
Herald's Horn
12%inclusion130 decks1.11K decks
5%synergy
Horn of Valhalla
11%inclusion126 decks1.11K decks
11%synergy
Power Conduit
11%inclusion123 decks1.11K decks
10%synergy
Darksteel Reactor
11%inclusion122 decks1.11K decks
6%synergy
Wayfarer's Bauble
10%inclusion116 decks1.11K decks
-1%synergy
Magistrate's Scepter
10%inclusion113 decks1.11K decks
8%synergy
Horn of Gondor
10%inclusion106 decks1.11K decks
5%synergy
Vanquisher's Banner
10%inclusion106 decks1.11K decks
5%synergy
Long-Range Sensor
9.0%inclusion26 decks289 decks
-1%synergy
Sword of the Animist
8.9%inclusion99 decks1.11K decks
4%synergy
Energy Chamber
8.7%inclusion97 decks1.11K decks
8%synergy
Basilisk Collar
8.4%inclusion93 decks1.11K decks
3%synergy
Lost Jitte
8.1%inclusion81 decks995 decks
7%synergy
Moxite Refinery
7.6%inclusion22 decks289 decks
-1%synergy
Surge Node
7.1%inclusion79 decks1.11K decks
7%synergy
Sword of Feast and Famine
7.0%inclusion78 decks1.11K decks
2%synergy
Uthros Research Craft
6.9%inclusion20 decks289 decks
-7%synergy
Conjurer's Closet
6.8%inclusion76 decks1.11K decks
5%synergy
Mace of the Valiant
6.8%inclusion75 decks1.11K decks
6%synergy
Sunforger
6.5%inclusion72 decks1.11K decks
3%synergy
Umezawa's Jitte
6.5%inclusion72 decks1.11K decks
6%synergy
Bident of Thassa
6.3%inclusion70 decks1.11K decks
-3%synergy
Titan Forge
6.1%inclusion68 decks1.11K decks
4%synergy
Tome of Legends
6.1%inclusion68 decks1.11K decks
6%synergy
Blackblade Reforged
5.9%inclusion66 decks1.11K decks
3%synergy
Sword of Hearth and Home
5.6%inclusion62 decks1.11K decks
3%synergy
Peter Parker's Camera
5.3%inclusion10 decks189 decks
4%synergy
Helm of the Host
5.2%inclusion58 decks1.11K decks
0%synergy
Enchantments
Whirlwind of Thought
28%inclusion314 decks1.11K decks
3%synergy
Warleader's Call
15%inclusion165 decks1.10K decks
8%synergy
Windcrag Siege
15%inclusion74 decks494 decks
10%synergy
Resourceful Defense
14%inclusion161 decks1.11K decks
9%synergy
Mobilization
14%inclusion158 decks1.11K decks
14%synergy
SOLDIER Military Program
13%inclusion53 decks408 decks
13%synergy
Propaganda
12%inclusion134 decks1.11K decks
1%synergy
Ghostly Prison
11%inclusion123 decks1.11K decks
-1%synergy
All Will Be One
11%inclusion118 decks1.11K decks
6%synergy
Cathars' Crusade
10%inclusion116 decks1.11K decks
7%synergy
Rising of the Day
10%inclusion111 decks1.11K decks
6%synergy
Aggravated Assault
10%inclusion110 decks1.11K decks
8%synergy
Aqueous Form
10%inclusion108 decks1.11K decks
6%synergy
Fiery Emancipation
8.9%inclusion99 decks1.11K decks
8%synergy
Teleportation Circle
8.5%inclusion94 decks1.11K decks
7%synergy
Kindred Discovery
8.3%inclusion92 decks1.11K decks
4%synergy
Curiosity
8.0%inclusion89 decks1.11K decks
4%synergy
Reconnaissance Mission
7.8%inclusion87 decks1.11K decks
4%synergy
Mesmerizing Dose
7.8%inclusion87 decks1.11K decks
8%synergy
Impact Tremors
7.8%inclusion87 decks1.11K decks
-4%synergy
Land Tax
7.6%inclusion84 decks1.11K decks
4%synergy
Frostcliff Siege
7.4%inclusion37 decks501 decks
-5%synergy
Jeskai Ascendancy
6.6%inclusion73 decks1.11K decks
-9%synergy
Military Intelligence
6.0%inclusion67 decks1.11K decks
6%synergy
Shared Animosity
5.9%inclusion65 decks1.11K decks
-1%synergy
Steel of the Godhead
5.8%inclusion64 decks1.11K decks
4%synergy
City on Fire
5.7%inclusion63 decks1.11K decks
3%synergy
Mystic Remora
5.6%inclusion62 decks1.11K decks
-7%synergy
Virtue of Knowledge
5.2%inclusion58 decks1.11K decks
4%synergy
Planeswalkers
Elspeth, Sun's Champion
18%inclusion198 decks1.11K decks
9%synergy
Basri Ket
7.9%inclusion88 decks1.11K decks
8%synergy
Elspeth, Storm Slayer
6.6%inclusion33 decks501 decks
2%synergy
Elspeth, Knight-Errant
6.3%inclusion70 decks1.11K decks
6%synergy
Archangel Elspeth
6.2%inclusion69 decks1.11K decks
5%synergy
Zariel, Archduke of Avernus
5.2%inclusion58 decks1.11K decks
5%synergy
Utility Lands
Rogue's Passage
34%inclusion379 decks1.11K decks
14%synergy
Reliquary Tower
29%inclusion326 decks1.11K decks
-5%synergy
Nesting Grounds
19%inclusion207 decks1.11K decks
17%synergy
Slayers' Stronghold
14%inclusion158 decks1.11K decks
12%synergy
Minas Tirith
9.4%inclusion104 decks1.11K decks
4%synergy
Three Tree City
8.4%inclusion74 decks880 decks
5%synergy
Otawara, Soaring City
8.2%inclusion91 decks1.11K decks
-5%synergy
Blast Zone
7.9%inclusion88 decks1.11K decks
7%synergy
Daru Encampment
7.2%inclusion80 decks1.11K decks
7%synergy
Tyrite Sanctum
7.0%inclusion78 decks1.11K decks
6%synergy
Arena of Glory
6.7%inclusion63 decks934 decks
3%synergy
Sunhome, Fortress of the Legion
6.1%inclusion68 decks1.11K decks
4%synergy
Uthros, Titanic Godcore
5.8%inclusion17 decks294 decks
-3%synergy
Buried Ruin
5.0%inclusion56 decks1.11K decks
-6%synergy
Mana Artifacts
Sol Ring
82%inclusion911 decks1.11K decks
-7%synergy
Arcane Signet
80%inclusion894 decks1.11K decks
-8%synergy
Talisman of Conviction
35%inclusion385 decks1.11K decks
-10%synergy
Talisman of Progress
33%inclusion364 decks1.11K decks
-13%synergy
Everflowing Chalice
33%inclusion363 decks1.11K decks
24%synergy
Talisman of Creativity
32%inclusion353 decks1.11K decks
-12%synergy
Azorius Signet
31%inclusion342 decks1.11K decks
-3%synergy
Boros Signet
31%inclusion341 decks1.11K decks
1%synergy
Izzet Signet
30%inclusion334 decks1.11K decks
-3%synergy
Fellwar Stone
25%inclusion280 decks1.11K decks
-7%synergy
Astral Cornucopia
20%inclusion226 decks1.11K decks
15%synergy
Commander's Sphere
20%inclusion219 decks1.11K decks
6%synergy
Thought Vessel
13%inclusion148 decks1.11K decks
-11%synergy
Chromatic Lantern
12%inclusion137 decks1.11K decks
3%synergy
Empowered Autogenerator
11%inclusion127 decks1.11K decks
8%synergy
Replicating Ring
11%inclusion124 decks1.11K decks
10%synergy
Staff of Compleation
10%inclusion116 decks1.11K decks
9%synergy
Aetheric Amplifier
8.7%inclusion51 decks583 decks
4%synergy
Mind Stone
7.7%inclusion86 decks1.11K decks
-5%synergy
Coalition Relic
7.6%inclusion84 decks1.11K decks
6%synergy
Jeskai Banner
7.4%inclusion82 decks1.11K decks
5%synergy
Patchwork Banner
7.2%inclusion63 decks878 decks
4%synergy
Liquimetal Torque
5.6%inclusion62 decks1.11K decks
4%synergy
Lands
Plains
97%inclusion1.08K decks1.11K decks
2%synergy
Island
96%inclusion1.07K decks1.11K decks
1%synergy
Mountain
96%inclusion1.06K decks1.11K decks
2%synergy
Command Tower
88%inclusion979 decks1.11K decks
-4%synergy
Mystic Monastery
61%inclusion673 decks1.11K decks
2%synergy
Clifftop Retreat
53%inclusion584 decks1.11K decks
3%synergy
Glacial Fortress
50%inclusion554 decks1.11K decks
-3%synergy
Sulfur Falls
47%inclusion526 decks1.11K decks
-4%synergy
Exotic Orchard
45%inclusion505 decks1.11K decks
-16%synergy
Raugrin Triome
45%inclusion504 decks1.11K decks
8%synergy
Prairie Stream
40%inclusion448 decks1.11K decks
0%synergy
Hallowed Fountain
40%inclusion445 decks1.11K decks
-1%synergy
Sacred Foundry
37%inclusion416 decks1.11K decks
-3%synergy
Path of Ancestry
37%inclusion411 decks1.11K decks
9%synergy
Steam Vents
36%inclusion404 decks1.11K decks
-4%synergy
Sea of Clouds
35%inclusion387 decks1.11K decks
4%synergy
Spectator Seating
34%inclusion382 decks1.11K decks
4%synergy
Training Center
33%inclusion366 decks1.11K decks
1%synergy
Fortified Beachhead
28%inclusion312 decks1.11K decks
28%synergy
Battlefield Forge
28%inclusion306 decks1.11K decks
-14%synergy
Evolving Wilds
27%inclusion302 decks1.11K decks
0%synergy
Stormcarved Coast
26%inclusion291 decks1.11K decks
3%synergy
Deserted Beach
26%inclusion290 decks1.11K decks
3%synergy
Sundown Pass
25%inclusion273 decks1.11K decks
5%synergy
Shivan Reef
24%inclusion264 decks1.11K decks
-16%synergy
Temple of Triumph
24%inclusion264 decks1.11K decks
-1%synergy
Arid Mesa
24%inclusion264 decks1.11K decks
-4%synergy
Temple of Enlightenment
24%inclusion262 decks1.11K decks
-3%synergy
Flooded Strand
23%inclusion252 decks1.11K decks
-7%synergy
Scalding Tarn
22%inclusion248 decks1.11K decks
-5%synergy
Temple of Epiphany
22%inclusion245 decks1.11K decks
-5%synergy
Perilous Landscape
21%inclusion199 decks934 decks
2%synergy
Adarkar Wastes
21%inclusion231 decks1.11K decks
-14%synergy
Terramorphic Expanse
19%inclusion207 decks1.11K decks
1%synergy
Boros Garrison
18%inclusion203 decks1.11K decks
8%synergy
Azorius Chancery
17%inclusion184 decks1.11K decks
4%synergy
Port Town
16%inclusion174 decks1.11K decks
-3%synergy
Izzet Boilerworks
15%inclusion167 decks1.11K decks
2%synergy
Myriad Landscape
12%inclusion135 decks1.11K decks
1%synergy
Furycalm Snarl
11%inclusion127 decks1.11K decks
-6%synergy
Unclaimed Territory
10%inclusion110 decks1.11K decks
8%synergy
Rugged Prairie
9.5%inclusion105 decks1.11K decks
-12%synergy
Reflecting Pool
9.3%inclusion103 decks1.11K decks
3%synergy
Frostboil Snarl
9.3%inclusion103 decks1.11K decks
-5%synergy
Legion Leadership
9.1%inclusion86 decks940 decks
3%synergy
Tundra
8.8%inclusion98 decks1.11K decks
-3%synergy
Plateau
8.8%inclusion98 decks1.11K decks
-3%synergy
Secluded Courtyard
8.8%inclusion98 decks1.11K decks
3%synergy
Skycloud Expanse
8.6%inclusion96 decks1.11K decks
-13%synergy
Volcanic Island
8.6%inclusion95 decks1.11K decks
-3%synergy