Undercover Operative
Felidar Guardian

   Prerequisites

What do I need to start this combo?
Felidar Guardian on the battlefield.
Undercover Operative in hand.
You have enough mana to cast Undercover Operative.

   Steps

How does this combo work?
1
Cast Undercover Operative by paying its mana cost, choosing to have it enter the battlefield as a copy of Felidar Guardian
2
When Undercover Operative enters the battlefield, it triggers, blinking Felidar Guardian.
3
When Felidar Guardian enters the battlefield, it triggers, blinking Undercover Operative. Choose to have Undercover Operative enter the battlefield as a copy of Felidar Guardian.
4
Repeat from step 2.

   Results

What do I get from this combo?
Infinite LTB
Infinite ETB
Aang, at the Crossroads
13%inclusion414 decks3.22K decks
Top Commanders
Brago, King Eternal
0.2%inclusion22 decks12.1K decks
Abdel Adrian, Gorion's Ward // Candlekeep Sage
0.4%inclusion18 decks4.25K decks
Yorion, Sky Nomad
0.7%inclusion16 decks2.35K decks
Lagrella, the Magpie
0.7%inclusion12 decks1.80K decks
Aminatou, the Fateshifter
0.2%inclusion11 decks6.51K decks
Sharuum the Hegemon
0.4%inclusion11 decks2.75K decks
Reaper King
0.1%inclusion9 decks7.41K decks
The Wandering Minstrel
0.1%inclusion8 decks12.3K decks
Helga, Skittish Seer
0.0%inclusion7 decks14.6K decks
Jodah, Archmage Eternal
0.1%inclusion7 decks8.30K decks
Hashaton, Scarab's Fist
0.0%inclusion7 decks20.1K decks
Livio, Oathsworn Sentinel // Sakashima of a Thousand Faces
11%inclusion5 decks47 decks
Sefris of the Hidden Ways
0.0%inclusion5 decks10.1K decks
Bane, Lord of Darkness
0.2%inclusion5 decks2.29K decks
Niko, Light of Hope
0.1%inclusion4 decks7.51K decks
Zinnia, Valley's Voice
0.0%inclusion4 decks14.9K decks
Roon of the Hidden Realm
0.1%inclusion4 decks3.09K decks
New Cards
Katara, the Fearless
77%inclusion345 decks449 decks
73%synergy
Airbender Ascension
29%inclusion132 decks460 decks
25%synergy
Badgermole Cub
24%inclusion104 decks433 decks
19%synergy
Aang, Swift Savior
19%inclusion84 decks454 decks
13%synergy
Appa, Steadfast Guardian
18%inclusion89 decks495 decks
16%synergy
High Synergy Cards
Restoration Angel
85%inclusion559 decks660 decks
82%synergy
Chameleon, Master of Disguise
82%inclusion402 decks488 decks
80%synergy
Clever Impersonator
77%inclusion508 decks660 decks
75%synergy
Starfield Vocalist
77%inclusion390 decks507 decks
74%synergy
Evil Twin
74%inclusion83 decks112 decks
73%synergy
Waxen Shapethief
70%inclusion404 decks579 decks
69%synergy
Naga Fleshcrafter
70%inclusion386 decks552 decks
69%synergy
Vizier of Many Faces
69%inclusion456 decks660 decks
68%synergy
Stunt Double
68%inclusion451 decks660 decks
67%synergy
Altered Ego
69%inclusion338 decks492 decks
67%synergy
Top Cards
Phyrexian Metamorph
74%inclusion490 decks660 decks
67%synergy
Clone
67%inclusion442 decks660 decks
66%synergy
Mirrorhall Mimic
65%inclusion430 decks660 decks
64%synergy
Spark Double
65%inclusion430 decks660 decks
59%synergy
Copycrook
63%inclusion399 decks631 decks
63%synergy
Dack's Duplicate
63%inclusion39 decks62 decks
62%synergy
Phantasmal Image
62%inclusion407 decks660 decks
59%synergy
Ephemerate
58%inclusion386 decks660 decks
52%synergy
Birds of Paradise
58%inclusion285 decks492 decks
30%synergy
Callidus Assassin
56%inclusion63 decks112 decks
55%synergy
Game Changers
Demonic Tutor
27%inclusion30 decks112 decks
7%synergy
Ancient Tomb
25%inclusion162 decks660 decks
15%synergy
Worldly Tutor
24%inclusion119 decks492 decks
12%synergy
Gaea's Cradle
22%inclusion110 decks492 decks
16%synergy
Chrome Mox
21%inclusion141 decks660 decks
15%synergy
Mana Vault
19%inclusion123 decks660 decks
13%synergy
Mox Diamond
18%inclusion119 decks660 decks
14%synergy
Crop Rotation
17%inclusion84 decks492 decks
7%synergy
Lion's Eye Diamond
11%inclusion70 decks660 decks
9%synergy
Grim Monolith
10%inclusion68 decks660 decks
8%synergy
Creatures
Icewind Stalwart
56%inclusion367 decks660 decks
55%synergy
Sakashima the Impostor
55%inclusion366 decks660 decks
54%synergy
Flesh Duplicate
55%inclusion361 decks660 decks
53%synergy
Avacyn's Pilgrim
55%inclusion269 decks492 decks
42%synergy
Sakashima of a Thousand Faces
55%inclusion360 decks660 decks
52%synergy
Visage Bandit
55%inclusion351 decks644 decks
54%synergy
Eternal Witness
53%inclusion259 decks492 decks
35%synergy
Emiel the Blessed
52%inclusion256 decks492 decks
49%synergy
Mirror Image
52%inclusion343 decks660 decks
51%synergy
Noble Hierarch
50%inclusion246 decks492 decks
34%synergy
Glasspool Mimic
49%inclusion326 decks660 decks
47%synergy
Gigantoplasm
49%inclusion323 decks660 decks
49%synergy
Preston, the Vanisher
47%inclusion312 decks660 decks
46%synergy
Llanowar Elves
46%inclusion226 decks492 decks
26%synergy
Delighted Halfling
45%inclusion222 decks492 decks
33%synergy
Superior Spider-Man
45%inclusion18 decks40 decks
43%synergy
Metamorphosis Fanatic
45%inclusion38 decks85 decks
43%synergy
Soulherder
41%inclusion268 decks660 decks
36%synergy
Kroxa and Kunoros
40%inclusion19 decks47 decks
40%synergy
Sister Hospitaller
39%inclusion44 decks112 decks
38%synergy
Roaming Throne
39%inclusion259 decks660 decks
33%synergy
Elvish Mystic
38%inclusion189 decks492 decks
22%synergy
Colossal Grave-Reaver
37%inclusion11 decks30 decks
31%synergy
Jwari Shapeshifter
36%inclusion239 decks660 decks
36%synergy
Wall of Stolen Identity
36%inclusion238 decks660 decks
35%synergy
Ardyn, the Usurper
33%inclusion19 decks57 decks
32%synergy
Sakashima's Student
33%inclusion217 decks660 decks
32%synergy
Elvish Spirit Guide
31%inclusion152 decks492 decks
27%synergy
Faeburrow Elder
29%inclusion145 decks492 decks
18%synergy
Charming Prince
29%inclusion194 decks660 decks
27%synergy
Bloom Tender
25%inclusion125 decks492 decks
18%synergy
Fyndhorn Elves
25%inclusion125 decks492 decks
15%synergy
Mardu Siegebreaker
25%inclusion8 decks32 decks
20%synergy
Baleful Strix
25%inclusion28 decks112 decks
12%synergy
Gyruda, Doom of Depths
24%inclusion27 decks112 decks
23%synergy
Thassa, Deep-Dwelling
23%inclusion155 decks660 decks
21%synergy
Ratadrabik of Urborg
23%inclusion26 decks112 decks
21%synergy
Coiling Oracle
22%inclusion106 decks492 decks
16%synergy
Flickerwisp
22%inclusion142 decks660 decks
20%synergy
Cloud of Faeries
22%inclusion142 decks660 decks
19%synergy
Displacer Kitten
20%inclusion132 decks660 decks
15%synergy
Solemn Simulacrum
20%inclusion131 decks660 decks
7%synergy
Voice of Victory
19%inclusion107 decks556 decks
13%synergy
Olivia, Crimson Bride
19%inclusion9 decks47 decks
18%synergy
Esper Sentinel
19%inclusion124 decks660 decks
0%synergy
Deadpool, Trading Card
19%inclusion6 decks32 decks
16%synergy
Grand Abolisher
18%inclusion118 decks660 decks
9%synergy
Anger
18%inclusion11 decks62 decks
11%synergy
Spellseeker
17%inclusion112 decks660 decks
14%synergy
Ruthless Technomancer
17%inclusion19 decks112 decks
15%synergy
Instants
Cloudshift
51%inclusion334 decks660 decks
47%synergy
Essence Flux
44%inclusion291 decks660 decks
41%synergy
Swords to Plowshares
42%inclusion279 decks660 decks
-19%synergy
Momentary Blink
32%inclusion208 decks660 decks
29%synergy
An Offer You Can't Refuse
28%inclusion185 decks660 decks
4%synergy
Path to Exile
27%inclusion179 decks660 decks
-20%synergy
Chord of Calling
26%inclusion129 decks492 decks
21%synergy
Ghostly Flicker
24%inclusion160 decks660 decks
19%synergy
Counterspell
23%inclusion155 decks660 decks
-18%synergy
Swan Song
20%inclusion129 decks660 decks
2%synergy
Eerie Interlude
19%inclusion124 decks660 decks
15%synergy
Cabal Ritual
18%inclusion20 decks112 decks
13%synergy
Silence
18%inclusion117 decks660 decks
11%synergy
Force of Will
17%inclusion110 decks660 decks
7%synergy
Pact of Negation
16%inclusion107 decks660 decks
9%synergy
Fierce Guardianship
16%inclusion104 decks660 decks
-2%synergy
Enlightened Tutor
15%inclusion102 decks660 decks
0%synergy
Dovin's Veto
13%inclusion89 decks660 decks
-5%synergy
Arcane Denial
13%inclusion85 decks660 decks
-7%synergy
Drown in the Loch
13%inclusion14 decks112 decks
8%synergy
Negate
12%inclusion82 decks660 decks
-9%synergy
Mindbreak Trap
12%inclusion77 decks660 decks
7%synergy
Heroic Intervention
11%inclusion55 decks492 decks
-19%synergy
Parting Gust
11%inclusion67 decks621 decks
9%synergy
Eladamri's Call
11%inclusion52 decks492 decks
1%synergy
Fell the Profane
10%inclusion10 decks96 decks
1%synergy
Cyclonic Rift
10%inclusion67 decks660 decks
-13%synergy
Flusterstorm
10%inclusion66 decks660 decks
3%synergy
Lae'zel's Acrobatics
10%inclusion65 decks660 decks
8%synergy
Tainted Pact
10%inclusion11 decks112 decks
6%synergy
Despark
10%inclusion11 decks112 decks
-4%synergy
Beast Within
9.3%inclusion46 decks492 decks
-25%synergy
Flicker of Fate
9.2%inclusion61 decks660 decks
8%synergy
Generous Gift
9.1%inclusion60 decks660 decks
-13%synergy
Hide on the Ceiling
8.4%inclusion41 decks487 decks
7%synergy
Planar Incision
8.2%inclusion54 decks660 decks
7%synergy
Force of Negation
8.2%inclusion54 decks660 decks
0%synergy
Lim-Dûl's Vault
8.0%inclusion9 decks112 decks
5%synergy
Utter End
8.0%inclusion9 decks112 decks
3%synergy
Snap
8.0%inclusion53 decks660 decks
0%synergy
Displace
7.9%inclusion52 decks660 decks
6%synergy
Mana Drain
7.6%inclusion50 decks660 decks
-7%synergy
Semester's End
7.3%inclusion48 decks660 decks
6%synergy
Dispel
6.8%inclusion45 decks660 decks
3%synergy
Mental Misstep
6.8%inclusion45 decks660 decks
1%synergy
Brainstorm
6.8%inclusion45 decks660 decks
-12%synergy
Desperate Ritual
6.5%inclusion4 decks62 decks
4%synergy
Pyretic Ritual
6.5%inclusion4 decks62 decks
3%synergy
Deflecting Swat
6.5%inclusion4 decks62 decks
-10%synergy
Deadly Rollick
6.3%inclusion7 decks112 decks
-7%synergy
Sorceries
Dread Return
46%inclusion52 decks112 decks
41%synergy
Farseek
30%inclusion147 decks492 decks
-6%synergy
Nature's Lore
24%inclusion120 decks492 decks
-7%synergy
Finale of Devastation
21%inclusion103 decks492 decks
13%synergy
Rampant Growth
20%inclusion97 decks492 decks
-14%synergy
Eldritch Evolution
20%inclusion96 decks492 decks
15%synergy
Three Visits
18%inclusion90 decks492 decks
-6%synergy
Culling Ritual
17%inclusion8 decks46 decks
6%synergy
Nature's Rhythm
17%inclusion80 decks464 decks
13%synergy
Avatar's Wrath
17%inclusion77 decks455 decks
12%synergy
Cultivate
17%inclusion83 decks492 decks
-26%synergy
Kodama's Reach
14%inclusion68 decks492 decks
-14%synergy
Green Sun's Zenith
12%inclusion59 decks492 decks
7%synergy
Damn
12%inclusion13 decks112 decks
-4%synergy
Shared Roots
12%inclusion49 decks424 decks
6%synergy
Persist
11%inclusion12 decks112 decks
9%synergy
Neoform
8.1%inclusion40 decks492 decks
4%synergy
Splash Portal
7.9%inclusion49 decks620 decks
7%synergy
Singularity Rupture
6.3%inclusion3 decks48 decks
2%synergy
Diabolic Tutor
6.3%inclusion7 decks112 decks
1%synergy
Diabolic Intent
6.3%inclusion7 decks112 decks
-2%synergy
Wargate
5.5%inclusion27 decks492 decks
3%synergy
Irenicus's Vile Duplication
5.5%inclusion36 decks660 decks
2%synergy
Time Wipe
5.5%inclusion36 decks660 decks
0%synergy
Stitch Together
5.4%inclusion6 decks112 decks
4%synergy
Unmarked Grave
5.4%inclusion6 decks112 decks
3%synergy
Feed the Swarm
5.4%inclusion6 decks112 decks
-11%synergy
Supreme Verdict
5.3%inclusion35 decks660 decks
-7%synergy
Austere Command
5.2%inclusion34 decks660 decks
-7%synergy
Another Round
5.1%inclusion33 decks644 decks
4%synergy
Utility Artifacts
Panharmonicon
51%inclusion334 decks660 decks
47%synergy
Conjurer's Closet
15%inclusion97 decks660 decks
12%synergy
Mirror Box
13%inclusion87 decks660 decks
12%synergy
Wishclaw Talisman
11%inclusion12 decks112 decks
5%synergy
Altar of the Brood
7.0%inclusion46 decks660 decks
6%synergy
Swiftfoot Boots
6.5%inclusion43 decks660 decks
-21%synergy
The One Ring
6.4%inclusion42 decks660 decks
-2%synergy
Enchantments
Wild Growth
33%inclusion163 decks492 decks
23%synergy
Animate Dead
25%inclusion28 decks112 decks
16%synergy
Mystic Remora
21%inclusion139 decks660 decks
5%synergy
Food Chain
21%inclusion103 decks492 decks
19%synergy
Utopia Sprawl
20%inclusion98 decks492 decks
12%synergy
Heartless Summoning
20%inclusion22 decks112 decks
19%synergy
Teleportation Circle
19%inclusion124 decks660 decks
16%synergy
Smothering Tithe
17%inclusion115 decks660 decks
-4%synergy
Rhystic Study
17%inclusion113 decks660 decks
-7%synergy
Touch the Spirit Realm
16%inclusion107 decks660 decks
14%synergy
Elemental Bond
15%inclusion76 decks492 decks
10%synergy
Sneak Attack
13%inclusion8 decks62 decks
11%synergy
Impact Tremors
11%inclusion7 decks62 decks
1%synergy
Dance of the Dead
11%inclusion12 decks112 decks
9%synergy
Virtue of Knowledge
10%inclusion69 decks660 decks
9%synergy
Annie Joins Up
10%inclusion4 decks40 decks
-3%synergy
Carpet of Flowers
10%inclusion47 decks492 decks
6%synergy
Molten Echoes
8.1%inclusion5 decks62 decks
7%synergy
Sylvan Library
6.7%inclusion33 decks492 decks
-3%synergy
Deafening Silence
6.7%inclusion44 decks660 decks
5%synergy
Mirror March
6.5%inclusion4 decks62 decks
6%synergy
Underworld Breach
6.5%inclusion4 decks62 decks
0%synergy
Mortuary
6.3%inclusion7 decks112 decks
6%synergy
Guardian Project
6.1%inclusion30 decks492 decks
-2%synergy
Crescent Island Temple
5.9%inclusion1 decks17 decks
5%synergy
Planeswalkers
Saheeli Rai
6.5%inclusion4 decks62 decks
5%synergy
Utility Lands
Boseiju, Who Endures
35%inclusion172 decks492 decks
16%synergy
Otawara, Soaring City
26%inclusion173 decks660 decks
10%synergy
Reliquary Tower
17%inclusion114 decks660 decks
-13%synergy
Yavimaya, Cradle of Growth
12%inclusion80 decks660 decks
3%synergy
City of Traitors
11%inclusion74 decks660 decks
10%synergy
Bojuka Bog
11%inclusion12 decks112 decks
-19%synergy
Takenuma, Abandoned Mire
10%inclusion11 decks112 decks
1%synergy
Mistrise Village
8.8%inclusion49 decks554 decks
1%synergy
Alchemist's Refuge
7.5%inclusion37 decks492 decks
2%synergy
Peat Bog
7.1%inclusion8 decks112 decks
7%synergy
Witch's Cottage
7.1%inclusion8 decks112 decks
4%synergy
Abandoned Air Temple
6.8%inclusion30 decks442 decks
2%synergy
Shifting Woodland
6.6%inclusion32 decks483 decks
0%synergy
Crystal Vein
6.4%inclusion42 decks660 decks
5%synergy
Mortuary Mire
6.3%inclusion7 decks112 decks
2%synergy
Phyrexian Tower
6.3%inclusion7 decks112 decks
-3%synergy
Urza's Saga
6.2%inclusion41 decks660 decks
-1%synergy
Ba Sing Se
5.5%inclusion23 decks418 decks
0%synergy
Secret Tunnel
5.5%inclusion25 decks457 decks
3%synergy
Mana Artifacts
Arcane Signet
80%inclusion528 decks660 decks
8%synergy
Sol Ring
76%inclusion501 decks660 decks
-8%synergy
Talisman of Dominance
51%inclusion57 decks112 decks
18%synergy
Talisman of Hierarchy
39%inclusion44 decks112 decks
13%synergy
Fellwar Stone
39%inclusion259 decks660 decks
19%synergy
Talisman of Progress
32%inclusion210 decks660 decks
6%synergy
Talisman of Curiosity
29%inclusion142 decks492 decks
16%synergy
Dimir Signet
28%inclusion31 decks112 decks
2%synergy
Orzhov Signet
27%inclusion30 decks112 decks
3%synergy
Talisman of Creativity
24%inclusion15 decks62 decks
-4%synergy
Lotus Petal
24%inclusion158 decks660 decks
17%synergy
Talisman of Unity
22%inclusion106 decks492 decks
14%synergy
Izzet Signet
18%inclusion11 decks62 decks
-7%synergy
Azorius Signet
17%inclusion114 decks660 decks
-5%synergy
Talisman of Indulgence
17%inclusion8 decks47 decks
-11%synergy
Talisman of Resilience
15%inclusion7 decks46 decks
2%synergy
Talisman of Conviction
13%inclusion8 decks62 decks
-11%synergy
Relic of Legends
10%inclusion67 decks660 decks
8%synergy
Boros Signet
10%inclusion6 decks62 decks
-10%synergy
Mind Stone
10%inclusion63 decks660 decks
-5%synergy
Thought Vessel
9.2%inclusion61 decks660 decks
-8%synergy
Simic Signet
6.7%inclusion33 decks492 decks
-5%synergy
Cursed Mirror
6.5%inclusion4 decks62 decks
1%synergy
Relic of Sauron
6.4%inclusion3 decks47 decks
-1%synergy
Charcoal Diamond
5.4%inclusion6 decks112 decks
1%synergy
Machine God's Effigy
5.3%inclusion35 decks660 decks
4%synergy
Commander's Sphere
5.3%inclusion35 decks660 decks
-7%synergy
Lands
Command Tower
92%inclusion606 decks660 decks
18%synergy
Breeding Pool
61%inclusion298 decks492 decks
19%synergy
Exotic Orchard
56%inclusion369 decks660 decks
20%synergy
Temple Garden
55%inclusion269 decks492 decks
16%synergy
Hallowed Fountain
50%inclusion332 decks660 decks
11%synergy
Flooded Strand
47%inclusion307 decks660 decks
35%synergy
Watery Grave
45%inclusion50 decks112 decks
3%synergy
Windswept Heath
42%inclusion275 decks660 decks
31%synergy
Misty Rainforest
41%inclusion273 decks660 decks
30%synergy
Overgrown Tomb
39%inclusion18 decks46 decks
-1%synergy
Godless Shrine
38%inclusion42 decks112 decks
-4%synergy
Yavimaya Coast
37%inclusion181 decks492 decks
10%synergy
Hinterland Harbor
36%inclusion176 decks492 decks
3%synergy
Glacial Fortress
35%inclusion233 decks660 decks
3%synergy
Tropical Island
34%inclusion165 decks492 decks
19%synergy
Rejuvenating Springs
33%inclusion162 decks492 decks
6%synergy
Prairie Stream
32%inclusion212 decks660 decks
-1%synergy
Savannah
32%inclusion158 decks492 decks
19%synergy
Adarkar Wastes
31%inclusion203 decks660 decks
7%synergy
Spara's Headquarters
30%inclusion150 decks492 decks
2%synergy
Polluted Delta
30%inclusion201 decks660 decks
18%synergy
Raffine's Tower
30%inclusion34 decks112 decks
6%synergy
Badlands
30%inclusion14 decks47 decks
16%synergy
Brushland
29%inclusion144 decks492 decks
10%synergy
Canopy Vista
29%inclusion141 decks492 decks
-8%synergy
Tundra
29%inclusion189 decks660 decks
15%synergy
Bayou
28%inclusion13 decks46 decks
15%synergy
Sea of Clouds
28%inclusion186 decks660 decks
4%synergy
Volcanic Island
27%inclusion17 decks62 decks
13%synergy
Steam Vents
27%inclusion17 decks62 decks
-10%synergy
Mana Confluence
27%inclusion180 decks660 decks
20%synergy
Scalding Tarn
27%inclusion180 decks660 decks
16%synergy
City of Brass
27%inclusion178 decks660 decks
19%synergy
Bountiful Promenade
27%inclusion131 decks492 decks
4%synergy
Sunpetal Grove
27%inclusion131 decks492 decks
-1%synergy
Marsh Flats
26%inclusion174 decks660 decks
16%synergy
Wooded Foothills
26%inclusion173 decks660 decks
15%synergy
Verdant Catacombs
26%inclusion173 decks660 decks
15%synergy
Cavern of Souls
26%inclusion172 decks660 decks
19%synergy
Arcane Sanctum
26%inclusion29 decks112 decks
-2%synergy
Dreamroot Cascade
25%inclusion125 decks492 decks
4%synergy
Undercity Sewers
25%inclusion28 decks112 decks
14%synergy
Sunken Hollow
25%inclusion28 decks112 decks
-9%synergy
Underground Sea
24%inclusion27 decks112 decks
9%synergy
Zagoth Triome
24%inclusion11 decks46 decks
-4%synergy
Gemstone Caverns
22%inclusion146 decks660 decks
17%synergy
Arid Mesa
22%inclusion142 decks660 decks
11%synergy
Seaside Citadel
21%inclusion105 decks492 decks
-5%synergy
Sacred Foundry
21%inclusion13 decks62 decks
-16%synergy
Taiga
21%inclusion9 decks43 decks
8%synergy