Cecily, Haunted Mage (Commander) - Optimized

Alternate Names:

Eleven, the MageEleven, the Mage

Background image for Way-Too-Early Top 10 Cards of 2026
DougY
Dec 12, 2025
Way-Too-Early Top 10 Cards of 2026
We've already seen a ton of new cards coming from 2026 Magic sets, so let's sign off on 2025 by looking at the best cards from the future.
Deck Filters
Cardsphere
Archidekt
Commander Spellbook
Moxfield
Scryfall
MTGStocks
Mnemonic Deluge
73%inclusion8 decks11 decks
72%synergy
Teferi's Ageless Insight
73%inclusion8 decks11 decks
70%synergy
Harmonic Prodigy
73%inclusion8 decks11 decks
63%synergy
Archmage Emeritus
64%inclusion7 decks11 decks
54%synergy
In Garruk's Wake
55%inclusion6 decks11 decks
53%synergy
Flame of Anor
55%inclusion6 decks11 decks
50%synergy
Time Stretch
45%inclusion5 decks11 decks
45%synergy
Triskaidekaphile
45%inclusion5 decks11 decks
44%synergy
Call Forth the Tempest
45%inclusion5 decks11 decks
44%synergy
Double Vision
45%inclusion5 decks11 decks
43%synergy
Top Cards
Counterspell
64%inclusion7 decks11 decks
19%synergy
Brainstorm
55%inclusion6 decks11 decks
37%synergy
Dark Ritual
55%inclusion6 decks11 decks
19%synergy
Lightning Greaves
55%inclusion6 decks11 decks
25%synergy
Chaos Warp
45%inclusion5 decks11 decks
9%synergy
Kess, Dissident Mage
45%inclusion5 decks11 decks
36%synergy
Cruel Ultimatum
45%inclusion5 decks11 decks
41%synergy
Fact or Fiction
45%inclusion5 decks11 decks
38%synergy
Opt
45%inclusion5 decks11 decks
40%synergy
Mystic Remora
45%inclusion5 decks11 decks
30%synergy
Game Changers
Rhystic Study
64%inclusion7 decks11 decks
40%synergy
Mystical Tutor
55%inclusion6 decks11 decks
41%synergy
Demonic Tutor
36%inclusion4 decks11 decks
15%synergy
Chrome Mox
36%inclusion4 decks11 decks
28%synergy
Jeska's Will
36%inclusion4 decks11 decks
20%synergy
Fierce Guardianship
36%inclusion4 decks11 decks
17%synergy
Cyclonic Rift
36%inclusion4 decks11 decks
14%synergy
Thassa's Oracle
27%inclusion3 decks11 decks
19%synergy
Consecrated Sphinx
27%inclusion3 decks11 decks
25%synergy
Notion Thief
27%inclusion3 decks11 decks
19%synergy
Creatures
Goblin Electromancer
36%inclusion4 decks11 decks
28%synergy
Storm-Kiln Artist
36%inclusion4 decks11 decks
27%synergy
Nightscape Familiar
36%inclusion4 decks11 decks
10%synergy
Niv-Mizzet, Parun
27%inclusion3 decks11 decks
22%synergy
Snapcaster Mage
27%inclusion3 decks11 decks
23%synergy
Cormela, Glamour Thief
27%inclusion3 decks11 decks
23%synergy
Baleful Strix
27%inclusion3 decks11 decks
18%synergy
Faerie Mastermind
27%inclusion3 decks11 decks
20%synergy
Vivi Ornitier
25%inclusion2 decks8 decks
17%synergy
Kefka, Court Mage
25%inclusion2 decks8 decks
20%synergy
Lyla, Holographic Assistant
25%inclusion1 decks4 decks
25%synergy
Tishana's Tidebinder
18%inclusion2 decks11 decks
17%synergy
Roaming Throne
18%inclusion2 decks11 decks
9%synergy
Dualcaster Mage
18%inclusion2 decks11 decks
10%synergy
Displacer Kitten
18%inclusion2 decks11 decks
13%synergy
Psychosis Crawler
18%inclusion2 decks11 decks
11%synergy
Wizards of Thay
18%inclusion2 decks11 decks
15%synergy
Archmage of Runes
18%inclusion2 decks11 decks
15%synergy
Irencrag Pyromancer
18%inclusion2 decks11 decks
18%synergy
Keen Duelist
18%inclusion2 decks11 decks
17%synergy
Talrand, Sky Summoner
18%inclusion2 decks11 decks
15%synergy
Lulu, Stern Guardian
13%inclusion1 decks8 decks
12%synergy
Summon: Anima
13%inclusion1 decks8 decks
12%synergy
Queen Brahne
13%inclusion1 decks8 decks
11%synergy
Xande, Dark Mage
13%inclusion1 decks8 decks
12%synergy
Mysidian Elder
13%inclusion1 decks8 decks
10%synergy
Golbez, Crystal Collector
13%inclusion1 decks8 decks
9%synergy
Kuja, Genome Sorcerer
13%inclusion1 decks8 decks
7%synergy
Fandaniel, Telophoroi Ascian
13%inclusion1 decks8 decks
11%synergy
Black Waltz No. 3
13%inclusion1 decks8 decks
7%synergy
Solemn Simulacrum
9.1%inclusion1 decks11 decks
-4%synergy
Etali, Primal Storm
9.1%inclusion1 decks11 decks
2%synergy
Mercurial Geists
9.1%inclusion1 decks11 decks
9%synergy
Dark Confidant
9.1%inclusion1 decks11 decks
8%synergy
Electrostatic Field
9.1%inclusion1 decks11 decks
8%synergy
Phyrexian Metamorph
9.1%inclusion1 decks11 decks
4%synergy
Sheoldred, the Apocalypse
9.1%inclusion1 decks11 decks
0%synergy
Ludevic, Necro-Alchemist
9.1%inclusion1 decks11 decks
9%synergy
River Song
9.1%inclusion1 decks11 decks
9%synergy
Mercurial Chemister
9.1%inclusion1 decks11 decks
9%synergy
Merfolk Mesmerist
9.1%inclusion1 decks11 decks
9%synergy
Mercurial Spelldancer
9.1%inclusion1 decks11 decks
9%synergy
Crabomination
9.1%inclusion1 decks11 decks
8%synergy
Dakra Mystic
9.1%inclusion1 decks11 decks
9%synergy
Balmor, Battlemage Captain
9.1%inclusion1 decks11 decks
8%synergy
Docent of Perfection
9.1%inclusion1 decks11 decks
8%synergy
Neera, Wild Mage
9.1%inclusion1 decks11 decks
9%synergy
Stella Lee, Wild Card
9.1%inclusion1 decks11 decks
9%synergy
Talion, the Kindly Lord
9.1%inclusion1 decks11 decks
7%synergy
Wild-Magic Sorcerer
9.1%inclusion1 decks11 decks
8%synergy
Instants
Negate
36%inclusion4 decks11 decks
14%synergy
Terminate
36%inclusion4 decks11 decks
11%synergy
Swan Song
36%inclusion4 decks11 decks
18%synergy
Bedevil
36%inclusion4 decks11 decks
20%synergy
Frantic Search
36%inclusion4 decks11 decks
17%synergy
Arcane Denial
27%inclusion3 decks11 decks
-1%synergy
Deflecting Swat
27%inclusion3 decks11 decks
9%synergy
An Offer You Can't Refuse
27%inclusion3 decks11 decks
-2%synergy
Mana Drain
27%inclusion3 decks11 decks
11%synergy
Force of Will
27%inclusion3 decks11 decks
17%synergy
Galvanic Iteration
27%inclusion3 decks11 decks
26%synergy
Increasing Vengeance
18%inclusion2 decks11 decks
16%synergy
Flare of Duplication
18%inclusion2 decks11 decks
15%synergy
Dig Through Time
18%inclusion2 decks11 decks
14%synergy
Rakdos Charm
18%inclusion2 decks11 decks
3%synergy
Nexus of Fate
18%inclusion2 decks11 decks
17%synergy
Demonic Consultation
18%inclusion2 decks11 decks
11%synergy
Valakut Awakening
18%inclusion2 decks11 decks
15%synergy
Fury Storm
18%inclusion2 decks11 decks
18%synergy
Counterflux
18%inclusion2 decks11 decks
17%synergy
Force of Negation
18%inclusion2 decks11 decks
10%synergy
Vampiric Tutor
18%inclusion2 decks11 decks
2%synergy
Fire Magic
13%inclusion1 decks8 decks
12%synergy
Transpose
13%inclusion1 decks8 decks
11%synergy
Self-Destruct
13%inclusion1 decks8 decks
12%synergy
Hagra Mauling
9.1%inclusion1 decks11 decks
8%synergy
Tainted Pact
9.1%inclusion1 decks11 decks
2%synergy
Scour from Existence
9.1%inclusion1 decks11 decks
9%synergy
Spellshift
9.1%inclusion1 decks11 decks
9%synergy
Seething Song
9.1%inclusion1 decks11 decks
3%synergy
Armor of Shadows
9.1%inclusion1 decks11 decks
9%synergy
Forbidden Alchemy
9.1%inclusion1 decks11 decks
7%synergy
Slip Out the Back
9.1%inclusion1 decks11 decks
6%synergy
Twinferno
9.1%inclusion1 decks11 decks
8%synergy
Magma Opus
9.1%inclusion1 decks11 decks
9%synergy
Magmaquake
9.1%inclusion1 decks11 decks
9%synergy
Wizard's Retort
9.1%inclusion1 decks11 decks
7%synergy
Plagiarize
9.1%inclusion1 decks11 decks
9%synergy
Rewind
9.1%inclusion1 decks11 decks
8%synergy
Hostile Negotiations
9.1%inclusion1 decks11 decks
9%synergy
Narset's Reversal
9.1%inclusion1 decks11 decks
4%synergy
Arcane Epiphany
9.1%inclusion1 decks11 decks
9%synergy
Withering Torment
9.1%inclusion1 decks11 decks
-4%synergy
Ionize
9.1%inclusion1 decks11 decks
8%synergy
Hero's Downfall
9.1%inclusion1 decks11 decks
8%synergy
Deadly Rollick
9.1%inclusion1 decks11 decks
-8%synergy
Disdainful Stroke
9.1%inclusion1 decks11 decks
8%synergy
Psychic Strike
9.1%inclusion1 decks11 decks
9%synergy
Dissolve
9.1%inclusion1 decks11 decks
9%synergy
Snuff Out
9.1%inclusion1 decks11 decks
6%synergy
Sorceries
Apex of Power
36%inclusion4 decks11 decks
36%synergy
Peer into the Abyss
27%inclusion3 decks11 decks
22%synergy
Preordain
27%inclusion3 decks11 decks
21%synergy
Rise of the Dark Realms
27%inclusion3 decks11 decks
22%synergy
Sea Gate Restoration
27%inclusion3 decks11 decks
25%synergy
Fevered Suspicion
27%inclusion3 decks11 decks
25%synergy
Arcane Endeavor
27%inclusion3 decks11 decks
27%synergy
Aminatou's Augury
27%inclusion3 decks11 decks
26%synergy
Windfall
27%inclusion3 decks11 decks
4%synergy
Brass's Bounty
27%inclusion3 decks11 decks
26%synergy
Army of the Damned
27%inclusion3 decks11 decks
26%synergy
Hit the Mother Lode
27%inclusion3 decks11 decks
26%synergy
Volcanic Vision
27%inclusion3 decks11 decks
27%synergy
Feed the Swarm
18%inclusion2 decks11 decks
-11%synergy
Treasure Cruise
18%inclusion2 decks11 decks
15%synergy
Rise of the Eldrazi
18%inclusion2 decks11 decks
18%synergy
Breach the Multiverse
18%inclusion2 decks11 decks
14%synergy
Clone Legion
18%inclusion2 decks11 decks
17%synergy
Blasphemous Act
18%inclusion2 decks11 decks
-27%synergy
Beacon of Tomorrows
18%inclusion2 decks11 decks
18%synergy
Time Warp
18%inclusion2 decks11 decks
17%synergy
Mizzix's Mastery
18%inclusion2 decks11 decks
15%synergy
Tidings
18%inclusion2 decks11 decks
18%synergy
Expropriate
18%inclusion2 decks11 decks
17%synergy
Mystic Retrieval
18%inclusion2 decks11 decks
17%synergy
Solve the Equation
18%inclusion2 decks11 decks
16%synergy
Sorceress's Schemes
13%inclusion1 decks8 decks
12%synergy
The Final Days
13%inclusion1 decks8 decks
12%synergy
Cornered by Black Mages
13%inclusion1 decks8 decks
9%synergy
Ultimate Magic: Meteor
13%inclusion1 decks8 decks
12%synergy
Deadly Embrace
13%inclusion1 decks8 decks
12%synergy
Circle of Power
13%inclusion1 decks8 decks
9%synergy
Snort
13%inclusion1 decks8 decks
12%synergy
Walk the Aeons
9.1%inclusion1 decks11 decks
9%synergy
Cathartic Reunion
9.1%inclusion1 decks11 decks
7%synergy
Plague Wind
9.1%inclusion1 decks11 decks
9%synergy
Stock Up
9.1%inclusion1 decks11 decks
7%synergy
Seize the Day
9.1%inclusion1 decks11 decks
8%synergy
Profane Transfusion
9.1%inclusion1 decks11 decks
9%synergy
Choice of Damnations
9.1%inclusion1 decks11 decks
9%synergy
Deep Analysis
9.1%inclusion1 decks11 decks
5%synergy
Buried Alive
9.1%inclusion1 decks11 decks
5%synergy
Ambition's Cost
9.1%inclusion1 decks11 decks
9%synergy
Plea for Power
9.1%inclusion1 decks11 decks
8%synergy
Doublecast
9.1%inclusion1 decks11 decks
9%synergy
Reanimate
9.1%inclusion1 decks11 decks
-15%synergy
Concentrate
9.1%inclusion1 decks11 decks
9%synergy
Traverse Eternity
9.1%inclusion1 decks11 decks
9%synergy
Behold the Beyond
9.1%inclusion1 decks11 decks
9%synergy
Show and Tell
9.1%inclusion1 decks11 decks
9%synergy
Utility Artifacts
Swiftfoot Boots
36%inclusion4 decks11 decks
10%synergy
Bolas's Citadel
18%inclusion2 decks11 decks
13%synergy
The One Ring
18%inclusion2 decks11 decks
5%synergy
Venser's Journal
18%inclusion2 decks11 decks
16%synergy
Whispersilk Cloak
18%inclusion2 decks11 decks
13%synergy
Black Mage's Rod
13%inclusion1 decks8 decks
10%synergy
Palantír of Orthanc
9.1%inclusion1 decks11 decks
6%synergy
Strionic Resonator
9.1%inclusion1 decks11 decks
4%synergy
Sensei's Divining Top
9.1%inclusion1 decks11 decks
6%synergy
Robe of the Archmagi
9.1%inclusion1 decks11 decks
8%synergy
Aetherflux Reservoir
9.1%inclusion1 decks11 decks
8%synergy
Wishclaw Talisman
9.1%inclusion1 decks11 decks
1%synergy
Sword of War and Peace
9.1%inclusion1 decks11 decks
9%synergy
Brotherhood Regalia
9.1%inclusion1 decks11 decks
5%synergy
Chaos Wand
9.1%inclusion1 decks11 decks
8%synergy
Armillary Sphere
9.1%inclusion1 decks11 decks
9%synergy
Twinning Staff
9.1%inclusion1 decks11 decks
4%synergy
Enchantments
Wizard Class
27%inclusion3 decks11 decks
25%synergy
Swarm Intelligence
27%inclusion3 decks11 decks
26%synergy
Phyrexian Arena
27%inclusion3 decks11 decks
17%synergy
Aqueous Form
18%inclusion2 decks11 decks
13%synergy
Thousand-Year Storm
18%inclusion2 decks11 decks
16%synergy
Frostcliff Siege
11%inclusion1 decks9 decks
8%synergy
Sunbird's Invocation
9.1%inclusion1 decks11 decks
9%synergy
Fiery Inscription
9.1%inclusion1 decks11 decks
4%synergy
The Ruinous Powers
9.1%inclusion1 decks11 decks
7%synergy
Psychic Battle
9.1%inclusion1 decks11 decks
9%synergy
Necropotence
9.1%inclusion1 decks11 decks
3%synergy
Dictate of Kruphix
9.1%inclusion1 decks11 decks
6%synergy
Curse of Echoes
9.1%inclusion1 decks11 decks
8%synergy
Black Market Connections
9.1%inclusion1 decks11 decks
-3%synergy
Mind's Dilation
9.1%inclusion1 decks11 decks
8%synergy
Eye of the Storm
9.1%inclusion1 decks11 decks
9%synergy
Underworld Breach
9.1%inclusion1 decks11 decks
-2%synergy
Nerd Rage
9.1%inclusion1 decks11 decks
9%synergy
Fevered Visions
9.1%inclusion1 decks11 decks
5%synergy
Possibility Storm
9.1%inclusion1 decks11 decks
9%synergy
Leyline of Anticipation
9.1%inclusion1 decks11 decks
3%synergy
Insight
9.1%inclusion1 decks11 decks
9%synergy
Animate Dead
9.1%inclusion1 decks11 decks
0%synergy
Ophidian Eye
9.1%inclusion1 decks11 decks
8%synergy
Search for Azcanta
9.1%inclusion1 decks11 decks
8%synergy
Hive Mind
9.1%inclusion1 decks11 decks
8%synergy
Elder Mastery
9.1%inclusion1 decks11 decks
9%synergy
Curiosity
9.1%inclusion1 decks11 decks
5%synergy
Forced Fruition
9.1%inclusion1 decks11 decks
5%synergy
Omniscience
9.1%inclusion1 decks11 decks
8%synergy
Shared Fate
9.1%inclusion1 decks11 decks
9%synergy
Planeswalkers
Ral, Storm Conduit
18%inclusion2 decks11 decks
17%synergy
Teferi, Master of Time
9.1%inclusion1 decks11 decks
8%synergy
Ral, Crackling Wit
9.1%inclusion1 decks11 decks
8%synergy
Jace, Wielder of Mysteries
9.1%inclusion1 decks11 decks
8%synergy
Ob Nixilis Reignited
9.1%inclusion1 decks11 decks
8%synergy
Geyadrone Dihada
9.1%inclusion1 decks11 decks
6%synergy
Nicol Bolas, God-Pharaoh
9.1%inclusion1 decks11 decks
6%synergy
Utility Lands
Reliquary Tower
55%inclusion6 decks11 decks
19%synergy
Rogue's Passage
36%inclusion4 decks11 decks
14%synergy
Multiversal Passage
25%inclusion1 decks4 decks
23%synergy
Temple of the False God
18%inclusion2 decks11 decks
10%synergy
Lindblum, Industrial Regency
13%inclusion1 decks8 decks
8%synergy
Riptide Laboratory
9.1%inclusion1 decks11 decks
5%synergy
Urza's Saga
9.1%inclusion1 decks11 decks
4%synergy
Geier Reach Sanitarium
9.1%inclusion1 decks11 decks
2%synergy
Otawara, Soaring City
9.1%inclusion1 decks11 decks
-7%synergy
Access Tunnel
9.1%inclusion1 decks11 decks
7%synergy
Mystic Sanctuary
9.1%inclusion1 decks11 decks
5%synergy
Strip Mine
9.1%inclusion1 decks11 decks
8%synergy
Bojuka Bog
9.1%inclusion1 decks11 decks
-15%synergy
Hall of Storm Giants
9.1%inclusion1 decks11 decks
9%synergy
Mana Artifacts
Sol Ring
82%inclusion9 decks11 decks
-8%synergy
Arcane Signet
64%inclusion7 decks11 decks
-25%synergy
Talisman of Dominance
64%inclusion7 decks11 decks
14%synergy
Talisman of Creativity
55%inclusion6 decks11 decks
10%synergy
Thought Vessel
55%inclusion6 decks11 decks
33%synergy
Fellwar Stone
45%inclusion5 decks11 decks
10%synergy
Talisman of Indulgence
45%inclusion5 decks11 decks
3%synergy
Chromatic Lantern
36%inclusion4 decks11 decks
21%synergy
Commander's Sphere
36%inclusion4 decks11 decks
16%synergy
Dimir Signet
27%inclusion3 decks11 decks
-9%synergy
Mana Vault
27%inclusion3 decks11 decks
18%synergy
Izzet Signet
27%inclusion3 decks11 decks
-6%synergy
Decanter of Endless Water
18%inclusion2 decks11 decks
13%synergy
Rakdos Signet
18%inclusion2 decks11 decks
-16%synergy
Mind Stone
18%inclusion2 decks11 decks
5%synergy
Darksteel Ingot
9.1%inclusion1 decks11 decks
8%synergy
Relic of Sauron
9.1%inclusion1 decks11 decks
-10%synergy
Lotus Petal
9.1%inclusion1 decks11 decks
-1%synergy
Chromatic Orrery
9.1%inclusion1 decks11 decks
8%synergy
Lion's Eye Diamond
9.1%inclusion1 decks11 decks
3%synergy
Coveted Jewel
9.1%inclusion1 decks11 decks
8%synergy
Mox Opal
9.1%inclusion1 decks11 decks
1%synergy
Pyromancer's Goggles
9.1%inclusion1 decks11 decks
9%synergy
Lands
Mountain
100%inclusion11 decks11 decks
9%synergy
Island
100%inclusion11 decks11 decks
7%synergy
Swamp
91%inclusion10 decks11 decks
-1%synergy
Command Tower
82%inclusion9 decks11 decks
-10%synergy
Shivan Reef
64%inclusion7 decks11 decks
35%synergy
Exotic Orchard
64%inclusion7 decks11 decks
7%synergy
Stormcarved Coast
64%inclusion7 decks11 decks
38%synergy
Xander's Lounge
55%inclusion6 decks11 decks
14%synergy
Sunken Hollow
55%inclusion6 decks11 decks
15%synergy
Drowned Catacomb
55%inclusion6 decks11 decks
12%synergy
Training Center
55%inclusion6 decks11 decks
22%synergy
Crumbling Necropolis
55%inclusion6 decks11 decks
0%synergy
Shipwreck Marsh
45%inclusion5 decks11 decks
20%synergy
Underground River
45%inclusion5 decks11 decks
18%synergy
Morphic Pool
45%inclusion5 decks11 decks
13%synergy
Watery Grave
45%inclusion5 decks11 decks
-1%synergy
Steam Vents
45%inclusion5 decks11 decks
1%synergy
Sulfurous Springs
45%inclusion5 decks11 decks
19%synergy
Smoldering Marsh
36%inclusion4 decks11 decks
-1%synergy
Blood Crypt
36%inclusion4 decks11 decks
-8%synergy
Choked Estuary
36%inclusion4 decks11 decks
19%synergy
Dragonskull Summit
36%inclusion4 decks11 decks
-8%synergy
Izzet Boilerworks
27%inclusion3 decks11 decks
16%synergy
Seething Landscape
27%inclusion3 decks11 decks
10%synergy
Scalding Tarn
27%inclusion3 decks11 decks
-5%synergy
Sea Gate Restoration
27%inclusion3 decks11 decks
25%synergy
Foreboding Ruins
27%inclusion3 decks11 decks
9%synergy
Sulfur Falls
27%inclusion3 decks11 decks
-19%synergy
Evolving Wilds
27%inclusion3 decks11 decks
3%synergy
Polluted Delta
27%inclusion3 decks11 decks
-7%synergy
Luxury Suite
27%inclusion3 decks11 decks
-5%synergy
Haunted Ridge
27%inclusion3 decks11 decks
6%synergy
Bloodstained Mire
27%inclusion3 decks11 decks
-7%synergy
Temple of Malice
18%inclusion2 decks11 decks
6%synergy
Volatile Fjord
18%inclusion2 decks11 decks
17%synergy
Volcanic Island
18%inclusion2 decks11 decks
3%synergy
City of Brass
18%inclusion2 decks11 decks
5%synergy
Riverglide Pathway
18%inclusion2 decks11 decks
12%synergy
Underground Sea
18%inclusion2 decks11 decks
3%synergy
Frostboil Snarl
18%inclusion2 decks11 decks
3%synergy
Path of Ancestry
18%inclusion2 decks11 decks
-13%synergy
Valakut Awakening
18%inclusion2 decks11 decks
15%synergy
Terramorphic Expanse
18%inclusion2 decks11 decks
-2%synergy
Dimir Aqueduct
18%inclusion2 decks11 decks
6%synergy
Mana Confluence
18%inclusion2 decks11 decks
6%synergy
Hagra Mauling
9.1%inclusion1 decks11 decks
8%synergy
Raucous Theater
9.1%inclusion1 decks11 decks
-2%synergy
Undercity Sewers
9.1%inclusion1 decks11 decks
-3%synergy
Rakdos Carnarium
9.1%inclusion1 decks11 decks
-2%synergy
Badlands
9.1%inclusion1 decks11 decks
-6%synergy