Etrata, the Silencer (Commander) - Assassins

Elijah Klein
Jul 28, 2020
The Toolbox - Mirage Mirror
Mirage Mirror sees a lot of play...
Deck Filters
Cardsphere
Archidekt
Commander Spellbook
Moxfield
Scryfall
MTGStocks
Skycoach Conductor
6.7%inclusion1 decks15 decks
6%synergy
Grave Researcher
6.3%inclusion1 decks16 decks
2%synergy
High Synergy Cards
Ramses, Assassin Lord
92%inclusion54 decks59 decks
90%synergy
Mari, the Killing Quill
88%inclusion52 decks59 decks
85%synergy
Ravenloft Adventurer
83%inclusion49 decks59 decks
81%synergy
Strionic Resonator
61%inclusion36 decks59 decks
57%synergy
Essence Flux
56%inclusion33 decks59 decks
52%synergy
Swiftfoot Boots
76%inclusion45 decks59 decks
52%synergy
Slip Out the Back
54%inclusion32 decks59 decks
51%synergy
Royal Assassin
51%inclusion30 decks59 decks
49%synergy
Gogo, Master of Mimicry
48%inclusion15 decks31 decks
47%synergy
Candlekeep Sage
46%inclusion27 decks59 decks
45%synergy
Top Cards
Counterspell
68%inclusion40 decks59 decks
12%synergy
Negate
49%inclusion29 decks59 decks
17%synergy
Spark Double
49%inclusion29 decks59 decks
39%synergy
Ezio, Blade of Vengeance
46%inclusion27 decks59 decks
44%synergy
Helm of the Host
46%inclusion27 decks59 decks
43%synergy
Lightning Greaves
46%inclusion27 decks59 decks
18%synergy
Unsummon
44%inclusion26 decks59 decks
42%synergy
Vanishing
42%inclusion25 decks59 decks
42%synergy
Teferi's Time Twist
42%inclusion25 decks59 decks
40%synergy
Propaganda
42%inclusion25 decks59 decks
25%synergy
Game Changers
Rhystic Study
17%inclusion10 decks59 decks
-6%synergy
Cyclonic Rift
17%inclusion10 decks59 decks
-6%synergy
Demonic Tutor
15%inclusion9 decks59 decks
-4%synergy
Vampiric Tutor
15%inclusion9 decks59 decks
-0%synergy
Notion Thief
15%inclusion9 decks59 decks
4%synergy
Fierce Guardianship
8.5%inclusion5 decks59 decks
-10%synergy
Mystical Tutor
6.8%inclusion4 decks59 decks
-6%synergy
Force of Will
5.1%inclusion3 decks59 decks
-5%synergy
Creatures
Crashing Drawbridge
41%inclusion24 decks59 decks
40%synergy
Auton Soldier
37%inclusion22 decks59 decks
33%synergy
Achilles Davenport
37%inclusion22 decks59 decks
36%synergy
Sakashima the Impostor
36%inclusion21 decks59 decks
32%synergy
Baleful Strix
34%inclusion20 decks59 decks
10%synergy
Sakashima of a Thousand Faces
32%inclusion19 decks59 decks
27%synergy
Vodalian Illusionist
31%inclusion18 decks59 decks
30%synergy
Roaming Throne
29%inclusion17 decks59 decks
16%synergy
Callidus Assassin
29%inclusion17 decks59 decks
26%synergy
Massacre Girl
29%inclusion17 decks59 decks
26%synergy
Adric, Mathematical Genius
29%inclusion17 decks59 decks
28%synergy
Unstoppable Slasher
28%inclusion13 decks47 decks
23%synergy
Desmond Miles
27%inclusion16 decks59 decks
26%synergy
Hired Poisoner
27%inclusion16 decks59 decks
26%synergy
Loyal Inventor
26%inclusion15 decks58 decks
25%synergy
Assassin Initiate
25%inclusion15 decks59 decks
24%synergy
Etrata, Deadly Fugitive
25%inclusion15 decks59 decks
25%synergy
Dour Port-Mage
25%inclusion13 decks53 decks
22%synergy
Chameleon, Master of Disguise
24%inclusion7 decks29 decks
20%synergy
Solemn Simulacrum
24%inclusion14 decks59 decks
12%synergy
Massacre Girl, Known Killer
24%inclusion14 decks59 decks
21%synergy
Basim Ibn Ishaq
22%inclusion13 decks59 decks
20%synergy
Big Game Hunter
22%inclusion13 decks59 decks
21%synergy
Roshan, Hidden Magister
22%inclusion13 decks59 decks
21%synergy
Lydia Frye
20%inclusion12 decks59 decks
19%synergy
Termination Facilitator
20%inclusion12 decks59 decks
20%synergy
Dark Impostor
20%inclusion12 decks59 decks
20%synergy
Midnight Assassin
20%inclusion12 decks59 decks
20%synergy
Zenos yae Galvus
19%inclusion6 decks31 decks
18%synergy
Irma, Part-Time Mutant
19%inclusion4 decks21 decks
17%synergy
Brotherhood Spy
19%inclusion11 decks59 decks
17%synergy
Vedalken Mastermind
17%inclusion10 decks59 decks
17%synergy
Guildsworn Prowler
17%inclusion10 decks59 decks
16%synergy
Cephalid Facetaker
17%inclusion10 decks59 decks
16%synergy
Deadeye Navigator
17%inclusion10 decks59 decks
14%synergy
Jacob Frye
15%inclusion9 decks59 decks
14%synergy
Identity Thief
15%inclusion9 decks59 decks
15%synergy
Thorn of the Black Rose
15%inclusion9 decks59 decks
15%synergy
Aven Heartstabber
15%inclusion9 decks59 decks
14%synergy
Evie Frye
14%inclusion8 decks59 decks
12%synergy
Dimir Infiltrator
14%inclusion8 decks59 decks
8%synergy
Silumgar Assassin
14%inclusion8 decks59 decks
13%synergy
Mistblade Shinobi
12%inclusion7 decks59 decks
4%synergy
Prosperous Thief
12%inclusion7 decks59 decks
1%synergy
Virtus the Veiled
12%inclusion7 decks59 decks
11%synergy
Kiku, Night's Flower
12%inclusion7 decks59 decks
12%synergy
Satoru Umezawa
12%inclusion7 decks59 decks
8%synergy
Ninja of the Deep Hours
10%inclusion6 decks59 decks
2%synergy
Ingenious Infiltrator
10%inclusion6 decks59 decks
1%synergy
Silver-Fur Master
10%inclusion6 decks59 decks
-1%synergy
Instants
Planar Incision
41%inclusion24 decks59 decks
38%synergy
Ghostly Flicker
39%inclusion23 decks59 decks
34%synergy
Dark Ritual
37%inclusion22 decks59 decks
1%synergy
Blur
32%inclusion19 decks59 decks
30%synergy
Go for the Throat
32%inclusion19 decks59 decks
16%synergy
Brainstorm
32%inclusion19 decks59 decks
2%synergy
Snap
32%inclusion19 decks59 decks
22%synergy
Escape Detection
29%inclusion17 decks59 decks
28%synergy
Aetherize
27%inclusion16 decks59 decks
16%synergy
Murder
27%inclusion16 decks59 decks
20%synergy
Geistwave
25%inclusion15 decks59 decks
25%synergy
An Offer You Can't Refuse
24%inclusion14 decks59 decks
-8%synergy
Reality Ripple
24%inclusion14 decks59 decks
23%synergy
Tyrant's Scorn
24%inclusion14 decks59 decks
22%synergy
Countersquall
22%inclusion13 decks59 decks
16%synergy
Chain Assassination
20%inclusion12 decks59 decks
19%synergy
Mana Drain
20%inclusion12 decks59 decks
3%synergy
Withering Torment
20%inclusion9 decks46 decks
4%synergy
Infernal Grasp
19%inclusion11 decks59 decks
3%synergy
Arcane Denial
19%inclusion11 decks59 decks
-7%synergy
Displace
17%inclusion10 decks59 decks
15%synergy
Clutch of the Undercity
17%inclusion10 decks59 decks
16%synergy
Doom Blade
17%inclusion10 decks59 decks
14%synergy
Rescue
17%inclusion10 decks59 decks
17%synergy
Run Away Together
15%inclusion9 decks59 decks
10%synergy
Siren's Ruse
15%inclusion9 decks59 decks
14%synergy
Hide on the Ceiling
14%inclusion4 decks29 decks
12%synergy
Muddle the Mixture
14%inclusion8 decks59 decks
9%synergy
Drown in the Loch
12%inclusion7 decks59 decks
-6%synergy
Opt
12%inclusion7 decks59 decks
0%synergy
Swan Song
12%inclusion7 decks59 decks
-7%synergy
Perplex
12%inclusion7 decks59 decks
9%synergy
March of Swirling Mist
12%inclusion7 decks59 decks
9%synergy
Hero's Downfall
10%inclusion6 decks59 decks
7%synergy
Tragic Slip
10%inclusion6 decks59 decks
6%synergy
Deadly Rollick
8.5%inclusion5 decks59 decks
-11%synergy
Frantic Search
8.5%inclusion5 decks59 decks
-11%synergy
Supplant Form
8.5%inclusion5 decks59 decks
8%synergy
Become Anonymous
8.5%inclusion5 decks59 decks
8%synergy
Unsubstantiate
8.5%inclusion5 decks59 decks
8%synergy
Evacuation
8.5%inclusion5 decks59 decks
6%synergy
Fatal Push
6.8%inclusion4 decks59 decks
5%synergy
Release to the Wind
6.8%inclusion4 decks59 decks
7%synergy
Peel from Reality
6.8%inclusion4 decks59 decks
7%synergy
Curfew
6.8%inclusion4 decks59 decks
7%synergy
Malakir Rebirth
6.8%inclusion4 decks59 decks
-3%synergy
Spell Pierce
6.8%inclusion4 decks59 decks
1%synergy
Sink into Stupor
6.8%inclusion4 decks59 decks
-9%synergy
Essence Capture
5.1%inclusion3 decks59 decks
4%synergy
Pongify
5.1%inclusion3 decks59 decks
-10%synergy
Sorceries
Nanogene Conversion
41%inclusion24 decks59 decks
38%synergy
Diabolic Tutor
39%inclusion23 decks59 decks
33%synergy
Eagle Vision
39%inclusion23 decks59 decks
37%synergy
Irenicus's Vile Duplication
34%inclusion20 decks59 decks
28%synergy
Quantum Misalignment
29%inclusion17 decks59 decks
27%synergy
Feed the Swarm
29%inclusion17 decks59 decks
-6%synergy
Sign in Blood
25%inclusion15 decks59 decks
19%synergy
Toxic Deluge
25%inclusion15 decks59 decks
0%synergy
Restart Sequence
20%inclusion12 decks59 decks
19%synergy
Fabricate
14%inclusion8 decks59 decks
10%synergy
Read the Bones
14%inclusion8 decks59 decks
10%synergy
Night's Whisper
14%inclusion8 decks59 decks
7%synergy
Damnation
14%inclusion8 decks59 decks
3%synergy
Ringsight
12%inclusion7 decks59 decks
6%synergy
Reanimate
12%inclusion7 decks59 decks
-13%synergy
Fell
11%inclusion6 decks55 decks
9%synergy
Ponder
10%inclusion6 decks59 decks
-6%synergy
Profane Tutor
10%inclusion6 decks59 decks
9%synergy
Back in Town
10%inclusion6 decks59 decks
9%synergy
Ravenform
8.5%inclusion5 decks59 decks
6%synergy
Notion Rain
8.5%inclusion5 decks59 decks
5%synergy
Sakashima's Will
6.8%inclusion4 decks59 decks
6%synergy
Petty Larceny
6.8%inclusion4 decks59 decks
6%synergy
Preordain
6.8%inclusion4 decks59 decks
-3%synergy
Artful Dodge
6.8%inclusion4 decks59 decks
6%synergy
Sleep
6.8%inclusion4 decks59 decks
6%synergy
Grim Tutor
6.8%inclusion4 decks59 decks
3%synergy
Enter the Enigma
6.5%inclusion3 decks46 decks
3%synergy
Windfall
5.1%inclusion3 decks59 decks
-8%synergy
Scheming Symmetry
5.1%inclusion3 decks59 decks
1%synergy
Quasiduplicate
5.1%inclusion3 decks59 decks
3%synergy
Dark Petition
5.1%inclusion3 decks59 decks
4%synergy
Exsanguinate
5.1%inclusion3 decks59 decks
3%synergy
Decree of Pain
5.1%inclusion3 decks59 decks
2%synergy
In Garruk's Wake
5.1%inclusion3 decks59 decks
0%synergy
River's Rebuke
5.1%inclusion3 decks59 decks
4%synergy
Assassinate
5.1%inclusion3 decks59 decks
5%synergy
Crippling Fear
5.1%inclusion3 decks59 decks
-2%synergy
Rite of Replication
5.1%inclusion3 decks59 decks
1%synergy
Utility Artifacts
Vorpal Sword
41%inclusion24 decks59 decks
38%synergy
Lithoform Engine
34%inclusion20 decks59 decks
33%synergy
Lavaspur Boots
34%inclusion20 decks59 decks
33%synergy
Crystal Shard
32%inclusion19 decks59 decks
31%synergy
Blade of Selves
31%inclusion18 decks59 decks
29%synergy
Peter Parker's Camera
24%inclusion7 decks29 decks
23%synergy
Mirror Box
24%inclusion14 decks59 decks
22%synergy
Mirror Gallery
15%inclusion9 decks59 decks
15%synergy
Hidden Blade
14%inclusion8 decks59 decks
13%synergy
Herald's Horn
14%inclusion8 decks59 decks
6%synergy
Brotherhood Regalia
14%inclusion8 decks59 decks
11%synergy
Quietus Spike
12%inclusion7 decks59 decks
10%synergy
Assassin Gauntlet
12%inclusion7 decks59 decks
10%synergy
Portal of Sanctuary
12%inclusion7 decks59 decks
12%synergy
Bident of Thassa
12%inclusion7 decks59 decks
2%synergy
Chariot of Victory
10%inclusion6 decks59 decks
10%synergy
Skateboard
10%inclusion2 decks21 decks
9%synergy
Wayfarer's Bauble
8.5%inclusion5 decks59 decks
-4%synergy
Erratic Portal
8.5%inclusion5 decks59 decks
8%synergy
Mirage Mirror
8.5%inclusion5 decks59 decks
8%synergy
Fireshrieker
8.5%inclusion5 decks59 decks
7%synergy
Winged Boots
8.5%inclusion5 decks59 decks
7%synergy
Strider Harness
8.5%inclusion5 decks59 decks
8%synergy
Smoke Bomb
8.5%inclusion5 decks59 decks
7%synergy
Sword of the Animist
8.5%inclusion5 decks59 decks
5%synergy
Ring of Valkas
6.8%inclusion4 decks59 decks
7%synergy
Haunted Cloak
6.8%inclusion4 decks59 decks
6%synergy
Whispersilk Cloak
6.8%inclusion4 decks59 decks
0%synergy
Netherborn Altar
6.8%inclusion4 decks59 decks
7%synergy
Shadowspear
6.8%inclusion4 decks59 decks
5%synergy
Sword of Hearth and Home
6.8%inclusion4 decks59 decks
6%synergy
Sapphire Medallion
6.8%inclusion4 decks59 decks
-1%synergy
Rover Blades
5.4%inclusion2 decks37 decks
5%synergy
Zephyr Boots
5.1%inclusion3 decks59 decks
5%synergy
Mithril Coat
5.1%inclusion3 decks59 decks
2%synergy
Cryptic Coat
5.1%inclusion3 decks59 decks
4%synergy
Fleetfeather Sandals
5.1%inclusion3 decks59 decks
5%synergy
Mask of Riddles
5.1%inclusion3 decks59 decks
4%synergy
Cloak of the Bat
5.1%inclusion3 decks59 decks
5%synergy
Enchantments
Vesuvan Duplimancy
34%inclusion20 decks59 decks
33%synergy
Reconnaissance Mission
31%inclusion18 decks59 decks
21%synergy
Rooftop Bypass
27%inclusion16 decks59 decks
25%synergy
Phyrexian Arena
19%inclusion11 decks59 decks
6%synergy
Black Market Connections
15%inclusion9 decks59 decks
5%synergy
Impostor Syndrome
14%inclusion4 decks29 decks
11%synergy
Double Down
14%inclusion8 decks59 decks
12%synergy
Coastal Piracy
14%inclusion8 decks59 decks
10%synergy
Rogue Class
12%inclusion7 decks59 decks
8%synergy
Black Market
10%inclusion6 decks59 decks
5%synergy
Leyline of Anticipation
10%inclusion6 decks59 decks
6%synergy
The Revelations of Ezio
8.5%inclusion5 decks59 decks
8%synergy
Aqueous Form
6.8%inclusion4 decks59 decks
-1%synergy
Combat Research
6.8%inclusion4 decks59 decks
5%synergy
Grievous Wound
6.4%inclusion3 decks47 decks
6%synergy
Discreet Retreat
5.1%inclusion3 decks59 decks
5%synergy
Coerced to Kill
5.1%inclusion3 decks59 decks
5%synergy
Kaya's Ghostform
5.1%inclusion3 decks59 decks
2%synergy
No Mercy
5.1%inclusion3 decks59 decks
2%synergy
Reflections of Littjara
5.1%inclusion3 decks59 decks
-5%synergy
Revel in Riches
5.1%inclusion3 decks59 decks
4%synergy
Cover of Darkness
5.1%inclusion3 decks59 decks
-2%synergy
Planeswalkers
Kaito, Dancing Shadow
37%inclusion22 decks59 decks
34%synergy
Vraska, Scheming Gorgon
8.5%inclusion5 decks59 decks
8%synergy
Utility Lands
Command Beacon
44%inclusion26 decks59 decks
40%synergy
Bojuka Bog
42%inclusion25 decks59 decks
4%synergy
Reliquary Tower
42%inclusion25 decks59 decks
6%synergy
Sanctum of Eternity
34%inclusion20 decks59 decks
33%synergy
Rogue's Passage
31%inclusion18 decks59 decks
4%synergy
Mystic Sanctuary
15%inclusion9 decks59 decks
-2%synergy
Otawara, Soaring City
15%inclusion9 decks59 decks
-3%synergy
Creeping Tar Pit
14%inclusion8 decks59 decks
5%synergy
Arcane Lighthouse
14%inclusion8 decks59 decks
13%synergy
Hall of the Bandit Lord
14%inclusion8 decks59 decks
13%synergy
Urborg, Tomb of Yawgmoth
14%inclusion8 decks59 decks
-6%synergy
Cabal Coffers
12%inclusion7 decks59 decks
1%synergy
Temple of the False God
12%inclusion7 decks59 decks
3%synergy
Halimar Depths
8.5%inclusion5 decks59 decks
2%synergy
Detection Tower
8.5%inclusion5 decks59 decks
8%synergy
Takenuma, Abandoned Mire
8.5%inclusion5 decks59 decks
-4%synergy
Castle Vantress
8.5%inclusion5 decks59 decks
4%synergy
Restless Reef
8.5%inclusion5 decks59 decks
2%synergy
Access Tunnel
8.5%inclusion5 decks59 decks
3%synergy
Mistrise Village
5.9%inclusion2 decks34 decks
3%synergy
Mortuary Mire
5.1%inclusion3 decks59 decks
-3%synergy
Nykthos, Shrine to Nyx
5.1%inclusion3 decks59 decks
2%synergy
Minas Morgul, Dark Fortress
5.1%inclusion3 decks59 decks
2%synergy
Archway of Innovation
5.1%inclusion3 decks59 decks
2%synergy
Mana Artifacts
Arcane Signet
85%inclusion50 decks59 decks
1%synergy
Sol Ring
78%inclusion46 decks59 decks
-10%synergy
Dimir Signet
58%inclusion34 decks59 decks
-1%synergy
Talisman of Dominance
39%inclusion23 decks59 decks
-19%synergy
Thought Vessel
27%inclusion16 decks59 decks
-4%synergy
Commander's Sphere
22%inclusion13 decks59 decks
6%synergy
Fellwar Stone
19%inclusion11 decks59 decks
-12%synergy
Mind Stone
15%inclusion9 decks59 decks
-13%synergy
Sky Diamond
12%inclusion7 decks59 decks
4%synergy
Dimir Locket
10%inclusion6 decks59 decks
8%synergy
Patchwork Banner
9.4%inclusion5 decks53 decks
1%synergy
Charcoal Diamond
8.5%inclusion5 decks59 decks
1%synergy
Dimir Keyrune
8.5%inclusion5 decks59 decks
4%synergy
Bender's Waterskin
6.9%inclusion2 decks29 decks
1%synergy
Strixhaven Stadium
6.8%inclusion4 decks59 decks
6%synergy
Dimir Cluestone
6.8%inclusion4 decks59 decks
5%synergy
Bounty Board
6.8%inclusion4 decks59 decks
7%synergy
Heraldic Banner
5.1%inclusion3 decks59 decks
3%synergy
Crystal Skull, Isu Spyglass
5.1%inclusion3 decks59 decks
3%synergy
Midnight Clock
5.1%inclusion3 decks59 decks
-2%synergy
Firemind Vessel
5.1%inclusion3 decks59 decks
5%synergy
Lands
Island
100%inclusion59 decks59 decks
3%synergy
Swamp
98%inclusion58 decks59 decks
2%synergy
Command Tower
86%inclusion51 decks59 decks
-1%synergy
Sunken Hollow
64%inclusion38 decks59 decks
-1%synergy
Drowned Catacomb
61%inclusion36 decks59 decks
7%synergy
Dimir Aqueduct
54%inclusion32 decks59 decks
17%synergy
Tainted Isle
49%inclusion29 decks59 decks
5%synergy
Choked Estuary
47%inclusion28 decks59 decks
0%synergy
Shipwreck Marsh
36%inclusion21 decks59 decks
-5%synergy
Watery Grave
36%inclusion21 decks59 decks
-13%synergy
Darkwater Catacombs
34%inclusion20 decks59 decks
-5%synergy
Morphic Pool
32%inclusion19 decks59 decks
-4%synergy
Temple of Deceit
31%inclusion18 decks59 decks
-5%synergy
Evolving Wilds
29%inclusion17 decks59 decks
12%synergy
Underground River
27%inclusion16 decks59 decks
-13%synergy
Polluted Delta
27%inclusion16 decks59 decks
-5%synergy
Dismal Backwater
25%inclusion15 decks59 decks
10%synergy
Path of Ancestry
25%inclusion15 decks59 decks
-2%synergy
Brotherhood Headquarters
24%inclusion14 decks59 decks
22%synergy
Exotic Orchard
22%inclusion13 decks59 decks
-10%synergy
Terramorphic Expanse
19%inclusion11 decks59 decks
8%synergy
Myriad Landscape
19%inclusion11 decks59 decks
-2%synergy
Cavern of Souls
19%inclusion11 decks59 decks
10%synergy
Gloomlake Verge
17%inclusion8 decks47 decks
-7%synergy
Undercity Sewers
15%inclusion9 decks59 decks
-5%synergy
Underground Sea
15%inclusion9 decks59 decks
2%synergy
Sunken Ruins
15%inclusion9 decks59 decks
-1%synergy
Clearwater Pathway
14%inclusion8 decks59 decks
-11%synergy
Dimir Guildgate
12%inclusion7 decks59 decks
5%synergy
Fabled Passage
10%inclusion6 decks59 decks
2%synergy
Fetid Pools
10%inclusion6 decks59 decks
-6%synergy
Secluded Courtyard
10%inclusion6 decks59 decks
5%synergy
Submerged Boneyard
10%inclusion6 decks59 decks
6%synergy
River of Tears
8.5%inclusion5 decks59 decks
-2%synergy
Darkslick Shores
8.5%inclusion5 decks59 decks
-5%synergy
Glasspool Mimic
8.5%inclusion5 decks59 decks
2%synergy
Contaminated Aquifer
8.5%inclusion5 decks59 decks
2%synergy
Ice Tunnel
6.8%inclusion4 decks59 decks
2%synergy
Verdant Catacombs
6.8%inclusion4 decks59 decks
-1%synergy
Malakir Rebirth
6.8%inclusion4 decks59 decks
-3%synergy
Sink into Stupor
6.8%inclusion4 decks59 decks
-9%synergy
Misty Rainforest
5.1%inclusion3 decks59 decks
-3%synergy
Unclaimed Territory
5.1%inclusion3 decks59 decks
-1%synergy
Opal Palace
5.1%inclusion3 decks59 decks
4%synergy
Scalding Tarn
5.1%inclusion3 decks59 decks
-3%synergy
Marsh Flats
5.1%inclusion3 decks59 decks
-3%synergy
Study Hall
5.1%inclusion3 decks59 decks
5%synergy
Flooded Strand
5.1%inclusion3 decks59 decks
-4%synergy
Bloodstained Mire
5.1%inclusion3 decks59 decks
-3%synergy