Cayth, Famed Mechanist (Commander) - Expensive Artifacts

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
Mirrorform
20%inclusion1 decks5 decks
19%synergy
Abundant Countryside
20%inclusion1 decks5 decks
20%synergy
Glen Elendra Guardian
20%inclusion1 decks5 decks
19%synergy
Does Machines
20%inclusion1 decks5 decks
20%synergy
Krang, Utrom Warlord
20%inclusion1 decks5 decks
20%synergy
High Synergy Cards
Urza's Saga
73%inclusion49 decks67 decks
65%synergy
Stridehangar Automaton
60%inclusion15 decks25 decks
59%synergy
Esper Sentinel
75%inclusion50 decks67 decks
55%synergy
Ancient Den
67%inclusion45 decks67 decks
55%synergy
Seat of the Synod
67%inclusion45 decks67 decks
54%synergy
Urza, Lord High Artificer
55%inclusion37 decks67 decks
51%synergy
Inventors' Fair
58%inclusion39 decks67 decks
51%synergy
Great Furnace
63%inclusion42 decks67 decks
51%synergy
Thousand Moons Smithy
54%inclusion36 decks67 decks
50%synergy
Oltec Matterweaver
52%inclusion35 decks67 decks
50%synergy
Top Cards
Swords to Plowshares
66%inclusion44 decks67 decks
-3%synergy
Etherium Sculptor
60%inclusion40 decks67 decks
47%synergy
Skullclamp
55%inclusion37 decks67 decks
44%synergy
Thought Monitor
55%inclusion37 decks67 decks
48%synergy
Steel Overseer
54%inclusion36 decks67 decks
44%synergy
Sai, Master Thopterist
52%inclusion35 decks67 decks
48%synergy
Illustrious Wanderglyph
49%inclusion33 decks67 decks
46%synergy
Foundry Inspector
48%inclusion32 decks67 decks
40%synergy
Panharmonicon
48%inclusion32 decks67 decks
38%synergy
Enthusiastic Mechanaut
48%inclusion32 decks67 decks
35%synergy
Game Changers
Rhystic Study
58%inclusion39 decks67 decks
39%synergy
Enlightened Tutor
52%inclusion35 decks67 decks
37%synergy
Smothering Tithe
51%inclusion34 decks67 decks
32%synergy
Cyclonic Rift
45%inclusion30 decks67 decks
28%synergy
Teferi's Protection
43%inclusion29 decks67 decks
29%synergy
The One Ring
39%inclusion26 decks67 decks
31%synergy
Fierce Guardianship
36%inclusion24 decks67 decks
21%synergy
Ancient Tomb
27%inclusion18 decks67 decks
20%synergy
Mana Vault
22%inclusion15 decks67 decks
18%synergy
Gamble
18%inclusion12 decks67 decks
12%synergy
Creatures
Ornithopter of Paradise
46%inclusion31 decks67 decks
39%synergy
Jhoira, Weatherlight Captain
46%inclusion31 decks67 decks
34%synergy
Reckless Fireweaver
45%inclusion30 decks67 decks
43%synergy
Kappa Cannoneer
45%inclusion30 decks67 decks
38%synergy
Losheel, Clockwork Scholar
45%inclusion30 decks67 decks
42%synergy
Alibou, Ancient Witness
40%inclusion27 decks67 decks
34%synergy
Solemn Simulacrum
37%inclusion25 decks67 decks
21%synergy
Brudiclad, Telchor Engineer
37%inclusion25 decks67 decks
33%synergy
Mondrak, Glory Dominus
37%inclusion25 decks67 decks
33%synergy
Urza, Prince of Kroog
36%inclusion24 decks67 decks
34%synergy
Anim Pakal, Thousandth Moon
33%inclusion22 decks67 decks
29%synergy
Master of Etherium
33%inclusion22 decks67 decks
32%synergy
Saheeli, the Sun's Brilliance
28%inclusion19 decks67 decks
27%synergy
Molten Gatekeeper
27%inclusion18 decks66 decks
23%synergy
Digsite Engineer
25%inclusion17 decks67 decks
25%synergy
Ingenious Artillerist
24%inclusion16 decks67 decks
23%synergy
Agate Instigator
24%inclusion12 decks51 decks
17%synergy
Iron Spider, Stark Upgrade
23%inclusion3 decks13 decks
21%synergy
Cyberman Patrol
22%inclusion15 decks67 decks
22%synergy
Purphoros, God of the Forge
22%inclusion15 decks67 decks
18%synergy
Bronze Guardian
22%inclusion15 decks67 decks
20%synergy
Surge Conductor
21%inclusion3 decks14 decks
8%synergy
Pinnacle Emissary
21%inclusion3 decks14 decks
18%synergy
Kilo, Apogee Mind
21%inclusion3 decks14 decks
11%synergy
Exalted Sunborn
21%inclusion3 decks14 decks
17%synergy
Weftstalker Ardent
21%inclusion3 decks14 decks
18%synergy
Goblin Engineer
21%inclusion14 decks67 decks
19%synergy
Loyal Apprentice
21%inclusion14 decks67 decks
16%synergy
Ravenous Robots
20%inclusion1 decks5 decks
20%synergy
Padeem, Consul of Innovation
19%inclusion13 decks67 decks
15%synergy
Phyrexian Metamorph
19%inclusion13 decks67 decks
11%synergy
Forensic Gadgeteer
19%inclusion13 decks67 decks
17%synergy
Filigree Vector
18%inclusion12 decks67 decks
16%synergy
Securitron Squadron
18%inclusion12 decks67 decks
17%synergy
Goblin Welder
18%inclusion12 decks67 decks
16%synergy
Voyager Quickwelder
17%inclusion4 decks23 decks
15%synergy
Guide of Souls
17%inclusion11 decks66 decks
10%synergy
Displacer Kitten
16%inclusion11 decks67 decks
12%synergy
Glen Elendra Archmage
16%inclusion11 decks67 decks
16%synergy
Ojer Taq, Deepest Foundation
16%inclusion11 decks67 decks
13%synergy
Silver Myr
16%inclusion11 decks67 decks
15%synergy
Threefold Thunderhulk
16%inclusion11 decks67 decks
12%synergy
Gold Myr
16%inclusion11 decks67 decks
15%synergy
Arcbound Shikari
15%inclusion10 decks67 decks
14%synergy
Master Transmuter
15%inclusion10 decks67 decks
14%synergy
Arabella, Abandoned Doll
15%inclusion6 decks41 decks
13%synergy
Starfield Vocalist
14%inclusion2 decks14 decks
11%synergy
Sami, Wildcat Captain
14%inclusion2 decks14 decks
11%synergy
Chief Engineer
13%inclusion9 decks67 decks
13%synergy
Iron Myr
13%inclusion9 decks67 decks
12%synergy
Instants
Path to Exile
46%inclusion31 decks67 decks
-3%synergy
Dispatch
39%inclusion26 decks67 decks
25%synergy
Mana Drain
39%inclusion26 decks67 decks
28%synergy
Counterspell
37%inclusion25 decks67 decks
2%synergy
Whir of Invention
27%inclusion18 decks67 decks
25%synergy
Deflecting Swat
24%inclusion16 decks67 decks
10%synergy
Boros Charm
21%inclusion14 decks67 decks
0%synergy
Dovin's Veto
19%inclusion13 decks67 decks
1%synergy
Swan Song
19%inclusion13 decks67 decks
2%synergy
An Offer You Can't Refuse
16%inclusion11 decks67 decks
-4%synergy
Generous Gift
16%inclusion11 decks67 decks
-5%synergy
Chaos Warp
15%inclusion10 decks67 decks
-7%synergy
Force of Will
13%inclusion9 decks67 decks
8%synergy
Mystical Tutor
13%inclusion9 decks67 decks
3%synergy
Flawless Maneuver
12%inclusion8 decks67 decks
0%synergy
Arcane Denial
12%inclusion8 decks67 decks
-4%synergy
Force of Negation
10%inclusion7 decks67 decks
5%synergy
Akroma's Will
10%inclusion7 decks67 decks
-1%synergy
Sink into Stupor
9.0%inclusion6 decks67 decks
0%synergy
Brainstorm
7.5%inclusion5 decks67 decks
-13%synergy
Scour for Scrap
7.1%inclusion1 decks14 decks
4%synergy
Rootborn Defenses
6.0%inclusion4 decks67 decks
3%synergy
Muddle the Mixture
6.0%inclusion4 decks67 decks
3%synergy
Thrill of Possibility
6.0%inclusion4 decks67 decks
2%synergy
Three Steps Ahead
6.0%inclusion4 decks67 decks
4%synergy
Negate
6.0%inclusion4 decks67 decks
-10%synergy
Strix Serenade
6.0%inclusion4 decks67 decks
4%synergy
Dramatic Reversal
6.0%inclusion4 decks67 decks
2%synergy
Abrade
6.0%inclusion4 decks67 decks
-1%synergy
Dawn's Truce
5.7%inclusion3 decks53 decks
-1%synergy
Sorceries
Fabricate
40%inclusion27 decks67 decks
33%synergy
Thoughtcast
34%inclusion23 decks67 decks
30%synergy
Organic Extinction
31%inclusion21 decks67 decks
23%synergy
Blasphemous Act
28%inclusion19 decks67 decks
6%synergy
Wake the Past
24%inclusion16 decks67 decks
14%synergy
Farewell
18%inclusion12 decks67 decks
3%synergy
Voyage Home
17%inclusion4 decks23 decks
15%synergy
Ponder
12%inclusion8 decks67 decks
-4%synergy
Austere Command
12%inclusion8 decks67 decks
0%synergy
Jeska's Will
12%inclusion8 decks67 decks
-2%synergy
Vandalblast
10%inclusion7 decks67 decks
1%synergy
Transmute Artifact
10%inclusion7 decks67 decks
10%synergy
March of Progress
10%inclusion7 decks67 decks
10%synergy
Sevinne's Reclamation
9.0%inclusion6 decks67 decks
0%synergy
Wheel of Fortune
9.0%inclusion6 decks67 decks
6%synergy
Flash Photography
8.3%inclusion1 decks12 decks
8%synergy
Windfall
6.0%inclusion4 decks67 decks
-3%synergy
Utility Artifacts
Simulacrum Synthesizer
46%inclusion31 decks67 decks
44%synergy
Insight Engine
43%inclusion6 decks14 decks
29%synergy
Darksteel Forge
37%inclusion25 decks67 decks
36%synergy
Unwinding Clock
30%inclusion20 decks67 decks
24%synergy
Inspirit, Flagship Vessel
29%inclusion4 decks14 decks
20%synergy
Ashnod's Altar
28%inclusion19 decks67 decks
27%synergy
Worldwalker Helm
27%inclusion18 decks67 decks
26%synergy
Lightning Greaves
25%inclusion17 decks67 decks
1%synergy
Krark-Clan Ironworks
24%inclusion16 decks67 decks
23%synergy
Idol of Oblivion
21%inclusion14 decks67 decks
16%synergy
Clock of Omens
21%inclusion14 decks67 decks
18%synergy
Mystic Forge
18%inclusion12 decks67 decks
12%synergy
Portal to Phyrexia
16%inclusion11 decks67 decks
16%synergy
Dawnsire, Sunstar Dreadnought
14%inclusion2 decks14 decks
10%synergy
Long-Range Sensor
14%inclusion2 decks14 decks
5%synergy
Moxite Refinery
14%inclusion2 decks14 decks
6%synergy
Uthros Research Craft
14%inclusion2 decks14 decks
1%synergy
Sensei's Divining Top
13%inclusion9 decks67 decks
7%synergy
Inspiring Statuary
13%inclusion9 decks67 decks
13%synergy
Retrofitter Foundry
10%inclusion7 decks67 decks
10%synergy
Phyrexian Altar
10%inclusion7 decks67 decks
10%synergy
Mycosynth Lattice
10%inclusion7 decks67 decks
10%synergy
Bident of Thassa
10%inclusion7 decks67 decks
1%synergy
Illusionist's Bracers
9.0%inclusion6 decks67 decks
8%synergy
Cloud Key
9.0%inclusion6 decks67 decks
3%synergy
Automated Assembly Line
9.0%inclusion6 decks67 decks
3%synergy
Cauldron of Souls
9.0%inclusion6 decks67 decks
9%synergy
Transmutation Font
9.0%inclusion6 decks67 decks
9%synergy
Thopter Shop
9.0%inclusion6 decks67 decks
9%synergy
Swiftfoot Boots
9.0%inclusion6 decks67 decks
-16%synergy
Biorganic Carapace
8.3%inclusion1 decks12 decks
6%synergy
Repurposing Bay
8.0%inclusion2 decks25 decks
7%synergy
Steel Wrecking Ball
7.7%inclusion1 decks13 decks
8%synergy
Peter Parker's Camera
7.7%inclusion1 decks13 decks
7%synergy
Throne of Geth
7.5%inclusion5 decks67 decks
7%synergy
Blasting Station
7.5%inclusion5 decks67 decks
7%synergy
Animation Module
7.5%inclusion5 decks67 decks
7%synergy
Sculpting Steel
7.5%inclusion5 decks67 decks
5%synergy
Conjurer's Closet
7.5%inclusion5 decks67 decks
6%synergy
Warmaker Gunship
7.1%inclusion1 decks14 decks
6%synergy
Cryogen Relic
7.1%inclusion1 decks14 decks
6%synergy
Esoteric Duplicator
6.0%inclusion4 decks67 decks
6%synergy
Voltaic Key
6.0%inclusion4 decks67 decks
5%synergy
Decoction Module
6.0%inclusion4 decks67 decks
-1%synergy
Encroaching Mycosynth
6.0%inclusion4 decks67 decks
5%synergy
Aetherworks Marvel
6.0%inclusion4 decks67 decks
-2%synergy
Gonti's Aether Heart
6.0%inclusion4 decks67 decks
-1%synergy
Isochron Scepter
6.0%inclusion4 decks67 decks
3%synergy
Aether Refinery
6.0%inclusion4 decks67 decks
0%synergy
Altar of Dementia
6.0%inclusion4 decks67 decks
6%synergy
Enchantments
Anointed Procession
42%inclusion28 decks67 decks
36%synergy
Thopter Spy Network
37%inclusion25 decks67 decks
33%synergy
Warleader's Call
30%inclusion20 decks67 decks
22%synergy
Mechanized Production
27%inclusion18 decks67 decks
22%synergy
Impact Tremors
24%inclusion16 decks67 decks
12%synergy
Moonlit Meditation
21%inclusion3 decks14 decks
20%synergy
Weapons Manufacturing
21%inclusion3 decks14 decks
20%synergy
Tempered Steel
21%inclusion14 decks67 decks
20%synergy
Storm the Vault
21%inclusion14 decks67 decks
19%synergy
Caretaker's Talent
19%inclusion10 decks52 decks
15%synergy
Mystic Remora
18%inclusion12 decks67 decks
6%synergy
Artificer Class
15%inclusion10 decks67 decks
14%synergy
Mirrodin Besieged
13%inclusion9 decks67 decks
12%synergy
Intruder Alarm
9.0%inclusion6 decks67 decks
8%synergy
Intangible Virtue
9.0%inclusion6 decks67 decks
6%synergy
Goblin Bombardment
9.0%inclusion6 decks67 decks
8%synergy
Underworld Breach
7.5%inclusion5 decks67 decks
2%synergy
Efficient Construction
7.5%inclusion5 decks67 decks
6%synergy
Training Grounds
7.5%inclusion5 decks67 decks
3%synergy
Cathars' Crusade
7.5%inclusion5 decks67 decks
4%synergy
Nahiri's Resolve
6.0%inclusion4 decks67 decks
5%synergy
Planeswalkers
Tezzeret, Cruel Captain
29%inclusion4 decks14 decks
23%synergy
Saheeli, Filigree Master
18%inclusion12 decks67 decks
17%synergy
Tezzeret, Artifice Master
16%inclusion11 decks67 decks
15%synergy
Ugin, Eye of the Storms
14%inclusion3 decks21 decks
14%synergy
Saheeli, the Gifted
13%inclusion9 decks67 decks
13%synergy
Saheeli, Sublime Artificer
13%inclusion9 decks67 decks
7%synergy
Tezzeret the Seeker
12%inclusion8 decks67 decks
9%synergy
Elspeth, Storm Slayer
10%inclusion2 decks21 decks
5%synergy
Karn, Scion of Urza
7.5%inclusion5 decks67 decks
7%synergy
Saheeli Rai
7.5%inclusion5 decks67 decks
7%synergy
Karn, the Great Creator
7.5%inclusion5 decks67 decks
7%synergy
Daretti, Scrap Savant
7.5%inclusion5 decks67 decks
6%synergy
Utility Lands
Uthros, Titanic Godcore
50%inclusion7 decks14 decks
41%synergy
Academy Ruins
46%inclusion31 decks67 decks
39%synergy
Darksteel Citadel
45%inclusion30 decks67 decks
40%synergy
Otawara, Soaring City
37%inclusion25 decks67 decks
24%synergy
Archway of Innovation
37%inclusion24 decks65 decks
32%synergy
Reliquary Tower
34%inclusion23 decks67 decks
0%synergy
Fomori Vault
27%inclusion18 decks67 decks
26%synergy
Buried Ruin
18%inclusion12 decks67 decks
6%synergy
Treasure Vault
15%inclusion10 decks67 decks
11%synergy
Mistrise Village
14%inclusion3 decks21 decks
7%synergy
Adagia, Windswept Bastion
14%inclusion2 decks14 decks
8%synergy
Minamo, School at Water's Edge
12%inclusion8 decks67 decks
9%synergy
Mishra's Workshop
12%inclusion8 decks67 decks
12%synergy
Monumental Henge
9.1%inclusion6 decks66 decks
7%synergy
Eiganjo, Seat of the Empire
9.0%inclusion6 decks67 decks
4%synergy
Rogue's Passage
7.5%inclusion5 decks67 decks
-12%synergy
Karn's Bastion
7.5%inclusion5 decks67 decks
-6%synergy
Kavaron, Memorial World
7.1%inclusion1 decks14 decks
6%synergy
Secluded Starforge
7.1%inclusion1 decks14 decks
6%synergy
Urza's Tower
6.0%inclusion4 decks67 decks
6%synergy
Urza's Mine
6.0%inclusion4 decks67 decks
6%synergy
Strip Mine
6.0%inclusion4 decks67 decks
5%synergy
Minas Tirith
6.0%inclusion4 decks67 decks
1%synergy
Temple of the False God
6.0%inclusion4 decks67 decks
0%synergy
Urza's Power Plant
6.0%inclusion4 decks67 decks
6%synergy
Three Tree City
5.7%inclusion3 decks53 decks
2%synergy
Ishgard, the Holy See
5.6%inclusion1 decks18 decks
4%synergy
Mana Artifacts
Sol Ring
94%inclusion63 decks67 decks
5%synergy
Arcane Signet
84%inclusion56 decks67 decks
-5%synergy
Talisman of Creativity
45%inclusion30 decks67 decks
2%synergy
Mox Opal
43%inclusion29 decks67 decks
38%synergy
Talisman of Progress
42%inclusion28 decks67 decks
-3%synergy
Talisman of Conviction
34%inclusion23 decks67 decks
-10%synergy
Fellwar Stone
25%inclusion17 decks67 decks
-6%synergy
Azorius Signet
25%inclusion17 decks67 decks
-7%synergy
Boros Signet
24%inclusion16 decks67 decks
-5%synergy
Izzet Signet
21%inclusion14 decks67 decks
-11%synergy
Everflowing Chalice
18%inclusion12 decks67 decks
8%synergy
Thought Vessel
16%inclusion11 decks67 decks
-7%synergy
The Eternity Elevator
14%inclusion2 decks14 decks
9%synergy
Mana Crypt
13%inclusion9 decks67 decks
12%synergy
Lotus Petal
13%inclusion9 decks67 decks
7%synergy
Basalt Monolith
13%inclusion9 decks67 decks
12%synergy
Chrome Mox
13%inclusion9 decks67 decks
8%synergy
The Mightstone and Weakstone
12%inclusion8 decks67 decks
11%synergy
Replicating Ring
10%inclusion7 decks67 decks
9%synergy
Chromatic Lantern
10%inclusion7 decks67 decks
1%synergy
Mind Stone
10%inclusion7 decks67 decks
-2%synergy
Astral Cornucopia
9.0%inclusion6 decks67 decks
2%synergy
Midnight Clock
9.0%inclusion6 decks67 decks
5%synergy
Crystal Skull, Isu Spyglass
8.2%inclusion5 decks61 decks
7%synergy
Aetheric Amplifier
8.0%inclusion2 decks25 decks
4%synergy
Mox Amber
7.5%inclusion5 decks67 decks
3%synergy
Solar Array
7.1%inclusion1 decks14 decks
-3%synergy
Machine God's Effigy
6.0%inclusion4 decks67 decks
6%synergy
Mox Diamond
6.0%inclusion4 decks67 decks
2%synergy
White Auracite
5.6%inclusion1 decks18 decks
5%synergy
Lands
Plains
93%inclusion62 decks67 decks
-2%synergy
Command Tower
91%inclusion61 decks67 decks
-2%synergy
Island
91%inclusion61 decks67 decks
-5%synergy
Mountain
87%inclusion58 decks67 decks
-8%synergy
Steam Vents
84%inclusion56 decks67 decks
43%synergy
Hallowed Fountain
84%inclusion56 decks67 decks
42%synergy
Sacred Foundry
82%inclusion55 decks67 decks
42%synergy
Raugrin Triome
75%inclusion50 decks67 decks
38%synergy
Scalding Tarn
73%inclusion49 decks67 decks
46%synergy
Flooded Strand
73%inclusion49 decks67 decks
44%synergy
Arid Mesa
69%inclusion46 decks67 decks
41%synergy
Plateau
67%inclusion45 decks67 decks
56%synergy
Tundra
64%inclusion43 decks67 decks
53%synergy
Volcanic Island
64%inclusion43 decks67 decks
53%synergy
Sea of Clouds
58%inclusion39 decks67 decks
28%synergy
Training Center
58%inclusion39 decks67 decks
27%synergy
Spectator Seating
55%inclusion37 decks67 decks
26%synergy
Exotic Orchard
37%inclusion25 decks67 decks
-24%synergy
Spire of Industry
34%inclusion23 decks67 decks
21%synergy
Mystic Monastery
33%inclusion22 decks67 decks
-26%synergy
Silverbluff Bridge
31%inclusion21 decks67 decks
19%synergy
Razortide Bridge
30%inclusion20 decks67 decks
17%synergy
Polluted Delta
27%inclusion18 decks67 decks
20%synergy
Rustvale Bridge
27%inclusion18 decks67 decks
14%synergy
Elegant Parlor
24%inclusion16 decks67 decks
16%synergy
Wooded Foothills
24%inclusion16 decks67 decks
18%synergy
Marsh Flats
24%inclusion16 decks67 decks
18%synergy
Bloodstained Mire
24%inclusion16 decks67 decks
18%synergy
Windswept Heath
22%inclusion15 decks67 decks
16%synergy
Meticulous Archive
22%inclusion15 decks67 decks
13%synergy
Misty Rainforest
21%inclusion14 decks67 decks
14%synergy
Thundering Falls
19%inclusion13 decks67 decks
10%synergy
Adarkar Wastes
16%inclusion11 decks67 decks
-20%synergy
Sulfur Falls
16%inclusion11 decks67 decks
-36%synergy
Mana Confluence
16%inclusion11 decks67 decks
9%synergy
Prismatic Vista
15%inclusion10 decks67 decks
11%synergy
Battlefield Forge
15%inclusion10 decks67 decks
-27%synergy
Path of Ancestry
15%inclusion10 decks67 decks
-13%synergy
Cascade Bluffs
15%inclusion10 decks67 decks
-9%synergy
Shivan Reef
13%inclusion9 decks67 decks
-28%synergy
Power Depot
13%inclusion9 decks67 decks
11%synergy
City of Brass
13%inclusion9 decks67 decks
5%synergy
Clifftop Retreat
13%inclusion9 decks67 decks
-38%synergy
Glacial Fortress
12%inclusion8 decks67 decks
-42%synergy
Azorius Chancery
12%inclusion8 decks67 decks
0%synergy
Boros Garrison
12%inclusion8 decks67 decks
2%synergy
Deserted Beach
12%inclusion8 decks67 decks
-10%synergy
Witch Enchanter
10%inclusion7 decks67 decks
4%synergy
The Mycosynth Gardens
10%inclusion7 decks67 decks
4%synergy
Izzet Boilerworks
10%inclusion7 decks67 decks
-2%synergy