Glissa, the Traitor (Commander) - Expensive

Background image for Building Armix and Gilanra as Partner Commanders
Jesse Barker Plotkin
Building Armix and Gilanra as Partner Commanders
It's Partner Party time! Jesse's debut series article showcases two collaborative Partner strategists for artifact brewers.
Deck Filters
Cardsphere
Archidekt
Commander Spellbook
Moxfield
Scryfall
MTGStocks
Desperate Plea
2.8%inclusion1 decks36 decks
2%synergy
The Fire Nation Drill
2.6%inclusion1 decks38 decks
2%synergy
Badgermole Cub
2.6%inclusion1 decks38 decks
0%synergy
The Cabbage Merchant
2.4%inclusion2 decks84 decks
0%synergy
High Synergy Cards
Executioner's Capsule
69%inclusion183 decks264 decks
68%synergy
Mishra's Bauble
65%inclusion172 decks264 decks
64%synergy
Urza's Saga
69%inclusion181 decks264 decks
64%synergy
Inventors' Fair
64%inclusion169 decks264 decks
63%synergy
Krark-Clan Ironworks
61%inclusion161 decks264 decks
60%synergy
Vault of Whispers
65%inclusion171 decks264 decks
57%synergy
Haywire Mite
74%inclusion196 decks264 decks
57%synergy
Tree of Tales
64%inclusion170 decks264 decks
57%synergy
Nihil Spellbomb
58%inclusion152 decks264 decks
57%synergy
Urborg, Tomb of Yawgmoth
78%inclusion207 decks264 decks
55%synergy
Top Cards
Assassin's Trophy
61%inclusion161 decks264 decks
16%synergy
Scrap Trawler
57%inclusion150 decks264 decks
55%synergy
Sensei's Divining Top
54%inclusion143 decks264 decks
53%synergy
Wurmcoil Engine
53%inclusion139 decks264 decks
51%synergy
Expedition Map
49%inclusion129 decks264 decks
47%synergy
Foundry Inspector
48%inclusion126 decks264 decks
46%synergy
Myr Retriever
47%inclusion123 decks264 decks
45%synergy
Urza's Bauble
46%inclusion122 decks264 decks
46%synergy
Entomb
46%inclusion122 decks264 decks
38%synergy
Toxic Deluge
46%inclusion121 decks264 decks
25%synergy
Game Changers
Demonic Tutor
64%inclusion169 decks264 decks
49%synergy
Vampiric Tutor
53%inclusion140 decks264 decks
42%synergy
Ancient Tomb
50%inclusion131 decks264 decks
44%synergy
Bolas's Citadel
50%inclusion131 decks264 decks
44%synergy
The One Ring
44%inclusion115 decks264 decks
39%synergy
Mana Vault
42%inclusion112 decks264 decks
40%synergy
Crop Rotation
24%inclusion63 decks264 decks
15%synergy
Mox Diamond
24%inclusion63 decks264 decks
22%synergy
Necropotence
23%inclusion60 decks264 decks
20%synergy
Orcish Bowmasters
22%inclusion57 decks264 decks
18%synergy
Creatures
Imotekh the Stormlord
45%inclusion118 decks264 decks
44%synergy
Walking Ballista
43%inclusion113 decks264 decks
41%synergy
Solemn Simulacrum
37%inclusion97 decks264 decks
27%synergy
Noxious Gearhulk
36%inclusion95 decks264 decks
31%synergy
Braids, Arisen Nightmare
33%inclusion87 decks264 decks
20%synergy
Deathrite Shaman
31%inclusion83 decks264 decks
17%synergy
Marionette Master
31%inclusion82 decks264 decks
27%synergy
Sarinth Steelseeker
31%inclusion82 decks264 decks
30%synergy
Sylvok Replica
28%inclusion73 decks264 decks
27%synergy
Necron Deathmark
28%inclusion73 decks264 decks
26%synergy
Metalworker
25%inclusion67 decks264 decks
25%synergy
Arcbound Ravager
25%inclusion65 decks264 decks
24%synergy
Junk Diver
25%inclusion65 decks264 decks
23%synergy
Marionette Apprentice
24%inclusion57 decks233 decks
16%synergy
Birds of Paradise
24%inclusion63 decks264 decks
3%synergy
Lokhust Heavy Destroyer
23%inclusion62 decks264 decks
23%synergy
Eternal Witness
23%inclusion62 decks264 decks
-1%synergy
Psychomancer
23%inclusion62 decks264 decks
23%synergy
Liberator, Urza's Battlethopter
23%inclusion60 decks264 decks
22%synergy
Kuldotha Forgemaster
22%inclusion59 decks264 decks
22%synergy
Shimmer Myr
22%inclusion59 decks264 decks
22%synergy
Armix, Filigree Thrasher
20%inclusion54 decks264 decks
20%synergy
Disciple of the Vault
20%inclusion52 decks264 decks
16%synergy
Hangarback Walker
17%inclusion46 decks264 decks
17%synergy
Jhoira's Familiar
16%inclusion42 decks264 decks
15%synergy
Arcbound Condor
15%inclusion35 decks230 decks
15%synergy
Accursed Marauder
14%inclusion33 decks230 decks
5%synergy
Dark Confidant
14%inclusion37 decks264 decks
12%synergy
Myr Battlesphere
14%inclusion36 decks264 decks
13%synergy
Opposition Agent
13%inclusion34 decks264 decks
10%synergy
Chronomancer
13%inclusion33 decks264 decks
12%synergy
Phyrexian Revoker
13%inclusion33 decks264 decks
12%synergy
Icetill Explorer
12%inclusion11 decks92 decks
3%synergy
Steel Hellkite
12%inclusion31 decks264 decks
11%synergy
Llanowar Elves
11%inclusion30 decks264 decks
-22%synergy
Scrapyard Recombiner
11%inclusion30 decks264 decks
11%synergy
Sheoldred, the Apocalypse
11%inclusion30 decks264 decks
9%synergy
Plaguecrafter
11%inclusion29 decks264 decks
2%synergy
Elves of Deep Shadow
10%inclusion27 decks264 decks
-8%synergy
Ornithopter
9.5%inclusion25 decks264 decks
7%synergy
Dauthi Voidwalker
9.5%inclusion25 decks264 decks
6%synergy
Delighted Halfling
9.1%inclusion24 decks264 decks
1%synergy
Ornithopter of Paradise
8.7%inclusion23 decks264 decks
5%synergy
Glissa Sunslayer
8.7%inclusion23 decks264 decks
1%synergy
Umbral Collar Zealot
8.6%inclusion8 decks93 decks
3%synergy
Moriok Replica
8.3%inclusion22 decks264 decks
8%synergy
Argentum Masticore
8.3%inclusion22 decks264 decks
8%synergy
Burnished Hart
8.3%inclusion22 decks264 decks
5%synergy
Six
8.2%inclusion19 decks233 decks
1%synergy
Steel Overseer
8.0%inclusion21 decks264 decks
8%synergy
Instants
Abrupt Decay
40%inclusion106 decks264 decks
24%synergy
Beast Within
32%inclusion84 decks264 decks
-5%synergy
Dark Ritual
23%inclusion62 decks264 decks
7%synergy
Vona's Hunger
23%inclusion60 decks264 decks
21%synergy
Heroic Intervention
22%inclusion59 decks264 decks
-8%synergy
Soul Shatter
19%inclusion51 decks264 decks
16%synergy
Veil of Summer
19%inclusion50 decks264 decks
14%synergy
Noxious Revival
19%inclusion49 decks264 decks
14%synergy
Revitalizing Repast
17%inclusion39 decks232 decks
-3%synergy
Sheoldred's Edict
17%inclusion44 decks264 decks
14%synergy
Deadly Dispute
16%inclusion42 decks264 decks
-4%synergy
Fell the Profane
13%inclusion31 decks233 decks
4%synergy
Dismember
13%inclusion34 decks264 decks
11%synergy
Nature's Claim
13%inclusion34 decks264 decks
3%synergy
Worldly Tutor
11%inclusion29 decks264 decks
1%synergy
Deadly Rollick
11%inclusion29 decks264 decks
0%synergy
Fatal Push
10%inclusion26 decks264 decks
9%synergy
Tear Asunder
9.5%inclusion25 decks264 decks
-6%synergy
Go for the Throat
9.1%inclusion24 decks264 decks
4%synergy
Slaughter Pact
9.1%inclusion24 decks264 decks
8%synergy
Malakir Rebirth
9.1%inclusion24 decks264 decks
-1%synergy
Autumn's Veil
8.3%inclusion22 decks264 decks
6%synergy
Putrefy
8.3%inclusion22 decks264 decks
-27%synergy
Imp's Mischief
8.0%inclusion21 decks264 decks
5%synergy
Snuff Out
8.0%inclusion21 decks264 decks
6%synergy
Cabal Ritual
7.6%inclusion20 decks264 decks
5%synergy
Darkblast
7.6%inclusion20 decks264 decks
7%synergy
Flare of Malice
7.3%inclusion17 decks233 decks
5%synergy
Force of Vigor
7.2%inclusion19 decks264 decks
3%synergy
Tainted Pact
6.8%inclusion18 decks264 decks
6%synergy
Ad Nauseam
5.7%inclusion15 decks264 decks
5%synergy
Sorceries
Culling Ritual
34%inclusion91 decks264 decks
14%synergy
Damnation
30%inclusion79 decks264 decks
22%synergy
Beseech the Mirror
29%inclusion76 decks264 decks
27%synergy
Life from the Loam
23%inclusion62 decks264 decks
16%synergy
Reanimate
20%inclusion53 decks264 decks
0%synergy
Diabolic Intent
19%inclusion51 decks264 decks
9%synergy
Imperial Seal
19%inclusion50 decks264 decks
16%synergy
Bala Ged Recovery
15%inclusion39 decks264 decks
3%synergy
Nature's Lore
15%inclusion39 decks264 decks
-11%synergy
All Is Dust
10%inclusion26 decks264 decks
9%synergy
Three Visits
10%inclusion26 decks264 decks
-9%synergy
Rise of the Witch-king
9.5%inclusion25 decks264 decks
-4%synergy
Cultivate
9.5%inclusion25 decks264 decks
-31%synergy
Grim Tutor
8.3%inclusion22 decks264 decks
5%synergy
Rampant Growth
7.6%inclusion20 decks264 decks
-27%synergy
Agadeem's Awakening
7.2%inclusion19 decks264 decks
4%synergy
Finale of Devastation
7.2%inclusion19 decks264 decks
1%synergy
Their Name Is Death
7.2%inclusion19 decks264 decks
7%synergy
Deadly Brew
7.2%inclusion19 decks264 decks
3%synergy
Bridgeworks Battle
6.9%inclusion16 decks232 decks
2%synergy
Chain of Smog
6.4%inclusion17 decks264 decks
4%synergy
Buried Alive
6.4%inclusion17 decks264 decks
-2%synergy
Yawgmoth's Will
6.4%inclusion17 decks264 decks
6%synergy
Praetor's Grasp
6.4%inclusion17 decks264 decks
6%synergy
Blasphemous Edict
6.3%inclusion12 decks189 decks
-1%synergy
Night's Whisper
6.1%inclusion16 decks264 decks
-2%synergy
Terisiare's Devastation
6.1%inclusion16 decks264 decks
6%synergy
Farseek
5.7%inclusion15 decks264 decks
-13%synergy
Maelstrom Pulse
5.3%inclusion14 decks264 decks
-1%synergy
Utility Artifacts
Aetherflux Reservoir
40%inclusion106 decks264 decks
39%synergy
Viridian Longbow
39%inclusion103 decks264 decks
35%synergy
Lightning Greaves
35%inclusion92 decks264 decks
13%synergy
Mystic Forge
34%inclusion91 decks264 decks
34%synergy
Soul-Guide Lantern
34%inclusion90 decks264 decks
33%synergy
Wayfarer's Bauble
30%inclusion79 decks264 decks
27%synergy
Ashnod's Altar
29%inclusion76 decks264 decks
9%synergy
Ichor Wellspring
27%inclusion72 decks264 decks
26%synergy
Skullclamp
27%inclusion70 decks264 decks
-4%synergy
Wishclaw Talisman
26%inclusion69 decks264 decks
24%synergy
Mindslaver
25%inclusion66 decks264 decks
25%synergy
Conjurer's Bauble
23%inclusion60 decks264 decks
23%synergy
Tithing Blade
22%inclusion58 decks264 decks
21%synergy
Cloud Key
22%inclusion57 decks264 decks
21%synergy
Sculpting Steel
21%inclusion56 decks264 decks
20%synergy
Oblivion Stone
21%inclusion56 decks264 decks
21%synergy
Nevinyrral's Disk
20%inclusion53 decks264 decks
19%synergy
Cranial Plating
20%inclusion53 decks264 decks
19%synergy
Portal to Phyrexia
19%inclusion51 decks264 decks
18%synergy
Swiftfoot Boots
19%inclusion51 decks264 decks
-6%synergy
Thornbite Staff
19%inclusion51 decks264 decks
18%synergy
Nim Deathmantle
19%inclusion50 decks264 decks
18%synergy
Moonsilver Key
18%inclusion48 decks264 decks
18%synergy
Dross Skullbomb
18%inclusion48 decks264 decks
18%synergy
Demonic Junker
18%inclusion30 decks170 decks
17%synergy
Crucible of Worlds
17%inclusion46 decks264 decks
14%synergy
Vexing Bauble
16%inclusion37 decks230 decks
15%synergy
Engineered Explosives
15%inclusion40 decks264 decks
15%synergy
Phyrexian Altar
15%inclusion39 decks264 decks
6%synergy
Manifold Key
14%inclusion37 decks264 decks
14%synergy
Shadowspear
14%inclusion36 decks264 decks
11%synergy
Smokestack
13%inclusion35 decks264 decks
13%synergy
Grinding Station
13%inclusion34 decks264 decks
12%synergy
Torpor Orb
13%inclusion33 decks264 decks
12%synergy
Voltaic Key
12%inclusion31 decks264 decks
12%synergy
Darksteel Forge
11%inclusion30 decks264 decks
11%synergy
Tangle Wire
11%inclusion30 decks264 decks
11%synergy
Conduit of Worlds
11%inclusion29 decks264 decks
4%synergy
Memory Jar
11%inclusion28 decks264 decks
11%synergy
Mithril Coat
11%inclusion28 decks264 decks
7%synergy
Unwinding Clock
10%inclusion27 decks264 decks
10%synergy
Ratchet Bomb
10%inclusion26 decks264 decks
10%synergy
Pithing Needle
10%inclusion26 decks264 decks
10%synergy
Hunter's Bow
10%inclusion22 decks226 decks
9%synergy
Mesmeric Orb
9.5%inclusion25 decks264 decks
7%synergy
Sword of Feast and Famine
9.5%inclusion25 decks264 decks
9%synergy
Semblance Anvil
9.1%inclusion24 decks264 decks
9%synergy
Trading Post
9.1%inclusion24 decks264 decks
8%synergy
Nutrient Block
8.4%inclusion8 decks95 decks
8%synergy
Mycosynth Lattice
8.3%inclusion22 decks264 decks
8%synergy
Enchantments
Sylvan Library
39%inclusion103 decks264 decks
30%synergy
Biotransference
25%inclusion67 decks264 decks
24%synergy
Grave Pact
20%inclusion54 decks264 decks
12%synergy
Dictate of Erebos
16%inclusion43 decks264 decks
11%synergy
Exploration
14%inclusion37 decks264 decks
10%synergy
Teval's Judgment
13%inclusion19 decks141 decks
12%synergy
Ripples of Undeath
11%inclusion26 decks230 decks
3%synergy
Phyrexian Scriptures
11%inclusion29 decks264 decks
10%synergy
Carpet of Flowers
10%inclusion27 decks264 decks
8%synergy
Agent of the Iron Throne
10%inclusion26 decks264 decks
7%synergy
Phyrexian Arena
8.7%inclusion23 decks264 decks
-5%synergy
Survival of the Fittest
8.3%inclusion22 decks264 decks
6%synergy
Pernicious Deed
8.3%inclusion22 decks264 decks
7%synergy
Black Market Connections
7.2%inclusion19 decks264 decks
-1%synergy
Revel in Riches
6.1%inclusion16 decks264 decks
4%synergy
The Meathook Massacre
5.3%inclusion14 decks264 decks
-3%synergy
Attrition
5.3%inclusion14 decks264 decks
4%synergy
Animate Dead
5.3%inclusion14 decks264 decks
-3%synergy
Planeswalkers
Tezzeret, Cruel Captain
17%inclusion18 decks104 decks
17%synergy
Ugin, the Ineffable
15%inclusion40 decks264 decks
14%synergy
Karn, the Great Creator
14%inclusion36 decks264 decks
13%synergy
Ugin, Eye of the Storms
10%inclusion14 decks141 decks
10%synergy
Utility Lands
Yavimaya, Cradle of Growth
64%inclusion170 decks264 decks
37%synergy
Boseiju, Who Endures
61%inclusion160 decks264 decks
43%synergy
Cabal Coffers
36%inclusion95 decks264 decks
27%synergy
Bojuka Bog
33%inclusion87 decks264 decks
-7%synergy
Takenuma, Abandoned Mire
30%inclusion80 decks264 decks
19%synergy
Phyrexian Tower
30%inclusion78 decks264 decks
15%synergy
Darksteel Citadel
28%inclusion74 decks264 decks
23%synergy
Buried Ruin
26%inclusion68 decks264 decks
24%synergy
Strip Mine
24%inclusion63 decks264 decks
21%synergy
Mishra's Workshop
21%inclusion56 decks264 decks
21%synergy
Shifting Woodland
21%inclusion48 decks232 decks
10%synergy
Treasure Vault
20%inclusion53 decks264 decks
16%synergy
Fomori Vault
20%inclusion49 decks245 decks
20%synergy
Phyrexia's Core
19%inclusion49 decks264 decks
18%synergy
Gaea's Cradle
15%inclusion39 decks264 decks
9%synergy
Reliquary Tower
14%inclusion37 decks264 decks
-9%synergy
Volrath's Stronghold
12%inclusion32 decks264 decks
11%synergy
Cabal Pit
11%inclusion30 decks264 decks
11%synergy
Wasteland
11%inclusion28 decks264 decks
9%synergy
Thespian's Stage
10%inclusion27 decks264 decks
8%synergy
Yavimaya Hollow
10%inclusion26 decks264 decks
9%synergy
Maze of Ith
9.1%inclusion24 decks264 decks
8%synergy
Inkmoth Nexus
8.7%inclusion23 decks264 decks
8%synergy
Midgar, City of Mako
8.0%inclusion9 decks113 decks
4%synergy
Blast Zone
8.0%inclusion21 decks264 decks
7%synergy
High Market
7.6%inclusion20 decks264 decks
-1%synergy
Vesuva
7.6%inclusion20 decks264 decks
7%synergy
Barren Moor
7.2%inclusion19 decks264 decks
-1%synergy
Field of the Dead
7.2%inclusion19 decks264 decks
2%synergy
Tranquil Thicket
6.8%inclusion18 decks264 decks
-2%synergy
Spymaster's Vault
6.4%inclusion15 decks233 decks
3%synergy
Command Beacon
6.1%inclusion16 decks264 decks
2%synergy
The Tabernacle at Pendrell Vale
5.7%inclusion15 decks264 decks
6%synergy
Urza's Power Plant
5.3%inclusion14 decks264 decks
5%synergy
Urza's Mine
5.3%inclusion14 decks264 decks
5%synergy
Mana Artifacts
Sol Ring
92%inclusion244 decks264 decks
12%synergy
Mox Opal
70%inclusion186 decks264 decks
70%synergy
Arcane Signet
67%inclusion176 decks264 decks
4%synergy
Lotus Petal
53%inclusion141 decks264 decks
50%synergy
Mind Stone
48%inclusion128 decks264 decks
43%synergy
Talisman of Resilience
46%inclusion122 decks264 decks
21%synergy
Chromatic Star
46%inclusion122 decks264 decks
46%synergy
Golgari Signet
40%inclusion106 decks264 decks
13%synergy
Chromatic Sphere
34%inclusion89 decks264 decks
33%synergy
Chrome Mox
21%inclusion56 decks264 decks
18%synergy
Grim Monolith
19%inclusion50 decks264 decks
18%synergy
Mox Amber
17%inclusion46 decks264 decks
16%synergy
Commander's Sphere
16%inclusion42 decks264 decks
8%synergy
Mana Crypt
14%inclusion37 decks264 decks
13%synergy
Fellwar Stone
14%inclusion36 decks264 decks
9%synergy
Thran Dynamo
14%inclusion36 decks264 decks
13%synergy
The Soul Stone
12%inclusion11 decks89 decks
10%synergy
Basalt Monolith
10%inclusion27 decks264 decks
10%synergy
Thought Vessel
9.5%inclusion25 decks264 decks
3%synergy
Everflowing Chalice
7.2%inclusion19 decks264 decks
6%synergy
Hedron Archive
6.4%inclusion17 decks264 decks
6%synergy
Jeweled Lotus
5.7%inclusion15 decks264 decks
5%synergy
Wizard's Rockets
5.7%inclusion15 decks264 decks
6%synergy
Gilded Lotus
5.3%inclusion14 decks264 decks
4%synergy
Lands
Swamp
93%inclusion245 decks264 decks
-4%synergy
Forest
91%inclusion241 decks264 decks
-7%synergy
Overgrown Tomb
91%inclusion239 decks264 decks
45%synergy
Command Tower
84%inclusion223 decks264 decks
-1%synergy
Verdant Catacombs
82%inclusion216 decks264 decks
52%synergy
Bayou
78%inclusion207 decks264 decks
67%synergy
Undergrowth Stadium
63%inclusion167 decks264 decks
25%synergy
Llanowar Wastes
56%inclusion148 decks264 decks
4%synergy
Woodland Cemetery
52%inclusion136 decks264 decks
-10%synergy
Twilight Mire
46%inclusion122 decks264 decks
10%synergy
Forbidden Orchard
46%inclusion121 decks264 decks
44%synergy
Underground Mortuary
45%inclusion119 decks264 decks
24%synergy
Nurturing Peatland
44%inclusion115 decks264 decks
31%synergy
Bloodstained Mire
41%inclusion107 decks264 decks
34%synergy
Polluted Delta
38%inclusion101 decks264 decks
32%synergy
Windswept Heath
38%inclusion101 decks264 decks
31%synergy
Wooded Foothills
37%inclusion97 decks264 decks
30%synergy
Misty Rainforest
37%inclusion97 decks264 decks
30%synergy
Marsh Flats
36%inclusion95 decks264 decks
30%synergy
Darkmoss Bridge
31%inclusion82 decks264 decks
21%synergy
Deathcap Glade
30%inclusion80 decks264 decks
1%synergy
Wastewood Verge
23%inclusion39 decks170 decks
6%synergy
Tainted Wood
22%inclusion59 decks264 decks
-22%synergy
Prismatic Vista
22%inclusion58 decks264 decks
16%synergy
Darkbore Pathway
22%inclusion57 decks264 decks
2%synergy
The Mycosynth Gardens
19%inclusion50 decks264 decks
18%synergy
Spire of Industry
18%inclusion47 decks264 decks
17%synergy
Revitalizing Repast
17%inclusion39 decks232 decks
-3%synergy
Exotic Orchard
16%inclusion43 decks264 decks
-11%synergy
Mana Confluence
16%inclusion42 decks264 decks
13%synergy
Golgari Rot Farm
16%inclusion41 decks264 decks
-26%synergy
Bala Ged Recovery
15%inclusion39 decks264 decks
3%synergy
Snow-Covered Forest
14%inclusion38 decks264 decks
10%synergy
Blooming Marsh
14%inclusion38 decks264 decks
0%synergy
Snow-Covered Swamp
14%inclusion37 decks264 decks
9%synergy
Gemstone Caverns
14%inclusion36 decks264 decks
11%synergy
Fell the Profane
13%inclusion31 decks233 decks
4%synergy
Urza's Cave
13%inclusion31 decks235 decks
11%synergy
Vernal Fen
12%inclusion11 decks95 decks
0%synergy
Fabled Passage
11%inclusion30 decks264 decks
-2%synergy
Festering Thicket
11%inclusion10 decks95 decks
5%synergy
City of Brass
10%inclusion26 decks264 decks
7%synergy
Malakir Rebirth
9.1%inclusion24 decks264 decks
-1%synergy
Temple of Malady
9.1%inclusion24 decks264 decks
-26%synergy
Agadeem's Awakening
7.2%inclusion19 decks264 decks
4%synergy
Bridgeworks Battle
6.9%inclusion16 decks232 decks
2%synergy
Reflecting Pool
6.1%inclusion16 decks264 decks
4%synergy
Power Depot
5.7%inclusion15 decks264 decks
4%synergy
Boggart Trawler
5.7%inclusion13 decks230 decks
2%synergy
Talon Gates of Madara
5.7%inclusion13 decks230 decks
4%synergy