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%inclusion383 decks3K decks
Top Commanders
Brago, King Eternal
0.2%inclusion22 decks12.2K decks
Abdel Adrian, Gorion's Ward // Candlekeep Sage
0.4%inclusion18 decks4.32K decks
Yorion, Sky Nomad
0.7%inclusion16 decks2.40K decks
Lagrella, the Magpie
0.7%inclusion13 decks1.84K decks
Aminatou, the Fateshifter
0.2%inclusion11 decks6.68K decks
Sharuum the Hegemon
0.4%inclusion11 decks2.81K decks
The Wandering Minstrel
0.1%inclusion8 decks12K decks
Jodah, Archmage Eternal
0.1%inclusion8 decks8.53K decks
Reaper King
0.1%inclusion8 decks7.36K decks
Helga, Skittish Seer
0.0%inclusion7 decks14.7K decks
Hashaton, Scarab's Fist
0.0%inclusion7 decks19.9K decks
Bane, Lord of Darkness
0.3%inclusion6 decks2.33K decks
Livio, Oathsworn Sentinel // Sakashima of a Thousand Faces
10%inclusion5 decks48 decks
Zinnia, Valley's Voice
0.0%inclusion5 decks15.1K decks
Sefris of the Hidden Ways
0.0%inclusion5 decks10.3K decks
Niko, Light of Hope
0.1%inclusion4 decks7.50K decks
Roon of the Hidden Realm
0.1%inclusion4 decks3.16K decks
New Cards
Katara, the Fearless
76%inclusion316 decks417 decks
72%synergy
Airbender Ascension
27%inclusion116 decks427 decks
24%synergy
Badgermole Cub
23%inclusion93 decks401 decks
18%synergy
Appa, Steadfast Guardian
18%inclusion84 decks463 decks
16%synergy
Aang, Swift Savior
17%inclusion72 decks421 decks
12%synergy
High Synergy Cards
Restoration Angel
84%inclusion537 decks637 decks
82%synergy
Chameleon, Master of Disguise
82%inclusion372 decks456 decks
79%synergy
Evil Twin
76%inclusion90 decks119 decks
75%synergy
Clever Impersonator
76%inclusion487 decks637 decks
74%synergy
Starfield Vocalist
76%inclusion362 decks475 decks
74%synergy
Naga Fleshcrafter
69%inclusion360 decks520 decks
68%synergy
Waxen Shapethief
69%inclusion377 decks547 decks
68%synergy
Stunt Double
69%inclusion440 decks637 decks
68%synergy
Vizier of Many Faces
69%inclusion439 decks637 decks
68%synergy
Altered Ego
69%inclusion320 decks463 decks
68%synergy
Top Cards
Phyrexian Metamorph
74%inclusion474 decks637 decks
67%synergy
Clone
67%inclusion426 decks637 decks
66%synergy
Mirrorhall Mimic
65%inclusion417 decks637 decks
65%synergy
Spark Double
64%inclusion410 decks637 decks
58%synergy
Copycrook
63%inclusion381 decks604 decks
63%synergy
Dack's Duplicate
63%inclusion41 decks65 decks
63%synergy
Phantasmal Image
61%inclusion390 decks637 decks
59%synergy
Ephemerate
57%inclusion365 decks637 decks
51%synergy
Callidus Assassin
57%inclusion68 decks119 decks
56%synergy
Birds of Paradise
57%inclusion264 decks463 decks
29%synergy
Game Changers
Demonic Tutor
26%inclusion31 decks119 decks
6%synergy
Ancient Tomb
25%inclusion157 decks637 decks
15%synergy
Worldly Tutor
24%inclusion110 decks463 decks
12%synergy
Gaea's Cradle
22%inclusion104 decks463 decks
17%synergy
Chrome Mox
22%inclusion138 decks637 decks
16%synergy
Mana Vault
18%inclusion117 decks637 decks
12%synergy
Mox Diamond
18%inclusion113 decks637 decks
13%synergy
Crop Rotation
16%inclusion76 decks463 decks
7%synergy
Lion's Eye Diamond
11%inclusion67 decks637 decks
9%synergy
Grim Monolith
10%inclusion66 decks637 decks
8%synergy
Creatures
Sakashima the Impostor
55%inclusion353 decks637 decks
54%synergy
Avacyn's Pilgrim
55%inclusion253 decks463 decks
42%synergy
Icewind Stalwart
55%inclusion348 decks637 decks
54%synergy
Visage Bandit
55%inclusion338 decks619 decks
54%synergy
Flesh Duplicate
54%inclusion346 decks637 decks
53%synergy
Sakashima of a Thousand Faces
53%inclusion338 decks637 decks
50%synergy
Eternal Witness
52%inclusion239 decks463 decks
34%synergy
Emiel the Blessed
51%inclusion238 decks463 decks
48%synergy
Mirror Image
51%inclusion326 decks637 decks
51%synergy
Gigantoplasm
49%inclusion313 decks637 decks
49%synergy
Noble Hierarch
49%inclusion226 decks463 decks
33%synergy
Glasspool Mimic
48%inclusion306 decks637 decks
45%synergy
Preston, the Vanisher
47%inclusion298 decks637 decks
46%synergy
Superior Spider-Man
46%inclusion18 decks39 decks
45%synergy
Llanowar Elves
46%inclusion213 decks463 decks
26%synergy
Metamorphosis Fanatic
45%inclusion40 decks88 decks
44%synergy
Delighted Halfling
44%inclusion206 decks463 decks
32%synergy
Sister Hospitaller
41%inclusion49 decks119 decks
40%synergy
Kroxa and Kunoros
41%inclusion20 decks49 decks
40%synergy
Soulherder
40%inclusion252 decks637 decks
35%synergy
Elvish Mystic
39%inclusion179 decks463 decks
23%synergy
Roaming Throne
38%inclusion243 decks637 decks
32%synergy
Colossal Grave-Reaver
38%inclusion11 decks29 decks
33%synergy
Wall of Stolen Identity
37%inclusion235 decks637 decks
36%synergy
Jwari Shapeshifter
35%inclusion225 decks637 decks
35%synergy
Ardyn, the Usurper
34%inclusion19 decks56 decks
33%synergy
Sakashima's Student
33%inclusion211 decks637 decks
32%synergy
Elvish Spirit Guide
30%inclusion139 decks463 decks
26%synergy
Faeburrow Elder
30%inclusion138 decks463 decks
19%synergy
Gyruda, Doom of Depths
29%inclusion34 decks119 decks
27%synergy
Charming Prince
28%inclusion180 decks637 decks
26%synergy
Fyndhorn Elves
26%inclusion120 decks463 decks
16%synergy
Mardu Siegebreaker
26%inclusion8 decks31 decks
20%synergy
Bloom Tender
25%inclusion115 decks463 decks
17%synergy
Baleful Strix
24%inclusion29 decks119 decks
11%synergy
Thassa, Deep-Dwelling
23%inclusion148 decks637 decks
21%synergy
Ratadrabik of Urborg
22%inclusion26 decks119 decks
19%synergy
Coiling Oracle
22%inclusion100 decks463 decks
16%synergy
Cloud of Faeries
21%inclusion136 decks637 decks
19%synergy
Displacer Kitten
20%inclusion129 decks637 decks
15%synergy
Solemn Simulacrum
20%inclusion129 decks637 decks
7%synergy
Flickerwisp
20%inclusion128 decks637 decks
18%synergy
Deadpool, Trading Card
19%inclusion6 decks31 decks
17%synergy
Voice of Victory
19%inclusion100 decks524 decks
13%synergy
Olivia, Crimson Bride
18%inclusion9 decks49 decks
17%synergy
Esper Sentinel
18%inclusion115 decks637 decks
-1%synergy
Grand Abolisher
18%inclusion114 decks637 decks
9%synergy
Anger
17%inclusion11 decks65 decks
11%synergy
Ruthless Technomancer
17%inclusion20 decks119 decks
15%synergy
Spellseeker
16%inclusion105 decks637 decks
13%synergy
Instants
Cloudshift
48%inclusion308 decks637 decks
45%synergy
Essence Flux
42%inclusion270 decks637 decks
39%synergy
Swords to Plowshares
41%inclusion262 decks637 decks
-20%synergy
Momentary Blink
32%inclusion205 decks637 decks
29%synergy
An Offer You Can't Refuse
27%inclusion174 decks637 decks
3%synergy
Path to Exile
27%inclusion169 decks637 decks
-21%synergy
Chord of Calling
26%inclusion121 decks463 decks
21%synergy
Ghostly Flicker
24%inclusion156 decks637 decks
20%synergy
Counterspell
23%inclusion146 decks637 decks
-19%synergy
Eerie Interlude
19%inclusion123 decks637 decks
16%synergy
Swan Song
19%inclusion120 decks637 decks
1%synergy
Cabal Ritual
18%inclusion21 decks119 decks
12%synergy
Silence
17%inclusion111 decks637 decks
11%synergy
Force of Will
16%inclusion103 decks637 decks
6%synergy
Pact of Negation
16%inclusion101 decks637 decks
9%synergy
Enlightened Tutor
15%inclusion96 decks637 decks
0%synergy
Fierce Guardianship
15%inclusion96 decks637 decks
-3%synergy
Dovin's Veto
14%inclusion87 decks637 decks
-5%synergy
Arcane Denial
13%inclusion83 decks637 decks
-7%synergy
Negate
13%inclusion82 decks637 decks
-8%synergy
Drown in the Loch
12%inclusion14 decks119 decks
7%synergy
Fell the Profane
11%inclusion11 decks100 decks
2%synergy
Mindbreak Trap
11%inclusion70 decks637 decks
6%synergy
Despark
11%inclusion13 decks119 decks
-3%synergy
Heroic Intervention
11%inclusion50 decks463 decks
-20%synergy
Eladamri's Call
11%inclusion49 decks463 decks
1%synergy
Cyclonic Rift
10%inclusion66 decks637 decks
-13%synergy
Parting Gust
10%inclusion61 decks593 decks
8%synergy
Lae'zel's Acrobatics
10%inclusion62 decks637 decks
8%synergy
Flusterstorm
10%inclusion62 decks637 decks
2%synergy
Flicker of Fate
9.4%inclusion60 decks637 decks
8%synergy
Tainted Pact
9.2%inclusion11 decks119 decks
5%synergy
Generous Gift
9.1%inclusion58 decks637 decks
-14%synergy
Beast Within
9.1%inclusion42 decks463 decks
-26%synergy
Planar Incision
8.5%inclusion54 decks637 decks
7%synergy
Lim-Dûl's Vault
8.4%inclusion10 decks119 decks
5%synergy
Snap
8.2%inclusion52 decks637 decks
0%synergy
Displace
8.0%inclusion51 decks637 decks
6%synergy
Force of Negation
7.8%inclusion50 decks637 decks
0%synergy
Mana Drain
7.8%inclusion50 decks637 decks
-7%synergy
Utter End
7.6%inclusion9 decks119 decks
2%synergy
Brainstorm
7.5%inclusion48 decks637 decks
-11%synergy
Hide on the Ceiling
7.5%inclusion34 decks455 decks
6%synergy
Semester's End
7.2%inclusion46 decks637 decks
6%synergy
Dispel
7.1%inclusion45 decks637 decks
3%synergy
Mental Misstep
6.8%inclusion43 decks637 decks
1%synergy
Blur
6.3%inclusion40 decks637 decks
5%synergy
Desperate Ritual
6.2%inclusion4 decks65 decks
3%synergy
Pyretic Ritual
6.2%inclusion4 decks65 decks
3%synergy
Thrill of Possibility
6.2%inclusion4 decks65 decks
-3%synergy
Sorceries
Dread Return
48%inclusion57 decks119 decks
43%synergy
Farseek
30%inclusion137 decks463 decks
-6%synergy
Nature's Lore
25%inclusion116 decks463 decks
-6%synergy
Finale of Devastation
21%inclusion95 decks463 decks
13%synergy
Rampant Growth
21%inclusion95 decks463 decks
-13%synergy
Eldritch Evolution
19%inclusion87 decks463 decks
14%synergy
Three Visits
19%inclusion87 decks463 decks
-6%synergy
Nature's Rhythm
17%inclusion75 decks432 decks
13%synergy
Cultivate
17%inclusion79 decks463 decks
-26%synergy
Culling Ritual
17%inclusion8 decks48 decks
6%synergy
Avatar's Wrath
16%inclusion69 decks422 decks
12%synergy
Kodama's Reach
14%inclusion67 decks463 decks
-13%synergy
Damn
13%inclusion15 decks119 decks
-3%synergy
Green Sun's Zenith
12%inclusion54 decks463 decks
6%synergy
Shared Roots
11%inclusion45 decks392 decks
6%synergy
Persist
10%inclusion12 decks119 decks
8%synergy
Splash Portal
7.8%inclusion46 decks592 decks
7%synergy
Neoform
7.6%inclusion35 decks463 decks
4%synergy
Singularity Rupture
6.4%inclusion3 decks47 decks
3%synergy
Stitch Together
5.9%inclusion7 decks119 decks
4%synergy
Diabolic Tutor
5.9%inclusion7 decks119 decks
0%synergy
Diabolic Intent
5.9%inclusion7 decks119 decks
-2%synergy
Feed the Swarm
5.9%inclusion7 decks119 decks
-11%synergy
Wargate
5.8%inclusion27 decks463 decks
3%synergy
Time Wipe
5.8%inclusion37 decks637 decks
0%synergy
Calamity of Cinders
5.8%inclusion3 decks52 decks
5%synergy
Irenicus's Vile Duplication
5.7%inclusion36 decks637 decks
2%synergy
Supreme Verdict
5.7%inclusion36 decks637 decks
-7%synergy
Austere Command
5.5%inclusion35 decks637 decks
-7%synergy
Another Round
5.2%inclusion32 decks619 decks
4%synergy
Unmarked Grave
5.0%inclusion6 decks119 decks
3%synergy
Utility Artifacts
Panharmonicon
49%inclusion315 decks637 decks
46%synergy
Conjurer's Closet
14%inclusion90 decks637 decks
12%synergy
Mirror Box
13%inclusion81 decks637 decks
12%synergy
Wishclaw Talisman
10%inclusion12 decks119 decks
5%synergy
Altar of the Brood
6.8%inclusion43 decks637 decks
6%synergy
Swiftfoot Boots
6.6%inclusion42 decks637 decks
-21%synergy
The One Ring
6.1%inclusion39 decks637 decks
-2%synergy
Strionic Resonator
5.2%inclusion33 decks637 decks
3%synergy
Enchantments
Wild Growth
33%inclusion153 decks463 decks
23%synergy
Animate Dead
25%inclusion30 decks119 decks
16%synergy
Food Chain
20%inclusion94 decks463 decks
19%synergy
Mystic Remora
20%inclusion127 decks637 decks
4%synergy
Utopia Sprawl
20%inclusion92 decks463 decks
12%synergy
Heartless Summoning
19%inclusion23 decks119 decks
18%synergy
Teleportation Circle
19%inclusion120 decks637 decks
16%synergy
Smothering Tithe
17%inclusion110 decks637 decks
-4%synergy
Rhystic Study
17%inclusion107 decks637 decks
-7%synergy
Touch the Spirit Realm
16%inclusion102 decks637 decks
14%synergy
Elemental Bond
16%inclusion73 decks463 decks
11%synergy
Sneak Attack
14%inclusion9 decks65 decks
12%synergy
Dance of the Dead
11%inclusion13 decks119 decks
9%synergy
Impact Tremors
11%inclusion7 decks65 decks
1%synergy
Virtue of Knowledge
11%inclusion68 decks637 decks
9%synergy
Annie Joins Up
10%inclusion4 decks41 decks
-3%synergy
Carpet of Flowers
9.3%inclusion43 decks463 decks
6%synergy
Mirror March
7.7%inclusion5 decks65 decks
7%synergy
Molten Echoes
7.7%inclusion5 decks65 decks
6%synergy
Mortuary
6.7%inclusion8 decks119 decks
7%synergy
Sylvan Library
6.7%inclusion31 decks463 decks
-3%synergy
Crescent Island Temple
6.3%inclusion1 decks16 decks
5%synergy
Underworld Breach
6.2%inclusion4 decks65 decks
0%synergy
Guardian Project
6.0%inclusion28 decks463 decks
-2%synergy
Deafening Silence
6.0%inclusion38 decks637 decks
4%synergy
Planeswalkers
Saheeli Rai
6.2%inclusion4 decks65 decks
5%synergy
Utility Lands
Boseiju, Who Endures
35%inclusion161 decks463 decks
16%synergy
Otawara, Soaring City
26%inclusion164 decks637 decks
9%synergy
Reliquary Tower
18%inclusion114 decks637 decks
-12%synergy
Yavimaya, Cradle of Growth
11%inclusion72 decks637 decks
3%synergy
Bojuka Bog
11%inclusion13 decks119 decks
-19%synergy
City of Traitors
11%inclusion68 decks637 decks
10%synergy
Takenuma, Abandoned Mire
10%inclusion12 decks119 decks
1%synergy
Mistrise Village
8.8%inclusion46 decks522 decks
1%synergy
Alchemist's Refuge
7.8%inclusion36 decks463 decks
2%synergy
Peat Bog
7.6%inclusion9 decks119 decks
7%synergy
Shifting Woodland
7.1%inclusion32 decks452 decks
0%synergy
Witch's Cottage
6.7%inclusion8 decks119 decks
3%synergy
Abandoned Air Temple
6.6%inclusion27 decks408 decks
1%synergy
Urza's Saga
6.4%inclusion41 decks637 decks
-1%synergy
Crystal Vein
6.1%inclusion39 decks637 decks
5%synergy
Mortuary Mire
5.9%inclusion7 decks119 decks
2%synergy
Phyrexian Tower
5.9%inclusion7 decks119 decks
-3%synergy
Secret Tunnel
5.2%inclusion22 decks424 decks
2%synergy
Dryad Arbor
5.2%inclusion24 decks463 decks
1%synergy
Mana Artifacts
Arcane Signet
80%inclusion509 decks637 decks
8%synergy
Sol Ring
75%inclusion476 decks637 decks
-9%synergy
Talisman of Dominance
54%inclusion64 decks119 decks
21%synergy
Talisman of Hierarchy
43%inclusion51 decks119 decks
17%synergy
Fellwar Stone
41%inclusion259 decks637 decks
20%synergy
Talisman of Progress
33%inclusion209 decks637 decks
7%synergy
Dimir Signet
30%inclusion36 decks119 decks
5%synergy
Orzhov Signet
29%inclusion35 decks119 decks
5%synergy
Talisman of Curiosity
29%inclusion133 decks463 decks
16%synergy
Talisman of Creativity
25%inclusion16 decks65 decks
-4%synergy
Lotus Petal
24%inclusion151 decks637 decks
17%synergy
Talisman of Unity
23%inclusion106 decks463 decks
15%synergy
Talisman of Resilience
19%inclusion9 decks48 decks
6%synergy
Azorius Signet
19%inclusion119 decks637 decks
-3%synergy
Izzet Signet
17%inclusion11 decks65 decks
-8%synergy
Talisman of Indulgence
16%inclusion8 decks49 decks
-12%synergy
Talisman of Conviction
14%inclusion9 decks65 decks
-10%synergy
Boros Signet
11%inclusion7 decks65 decks
-9%synergy
Relic of Legends
11%inclusion68 decks637 decks
8%synergy
Mind Stone
11%inclusion68 decks637 decks
-4%synergy
Thought Vessel
10%inclusion63 decks637 decks
-8%synergy
Talisman of Impulse
8.9%inclusion4 decks45 decks
-2%synergy
Simic Signet
6.9%inclusion32 decks463 decks
-5%synergy
Cursed Mirror
6.2%inclusion4 decks65 decks
0%synergy
Relic of Sauron
6.1%inclusion3 decks49 decks
-2%synergy
Charcoal Diamond
5.9%inclusion7 decks119 decks
2%synergy
Machine God's Effigy
5.5%inclusion35 decks637 decks
4%synergy
Commander's Sphere
5.5%inclusion35 decks637 decks
-7%synergy
Lands
Command Tower
92%inclusion584 decks637 decks
17%synergy
Breeding Pool
60%inclusion276 decks463 decks
18%synergy
Exotic Orchard
55%inclusion353 decks637 decks
19%synergy
Temple Garden
54%inclusion250 decks463 decks
16%synergy
Hallowed Fountain
49%inclusion315 decks637 decks
10%synergy
Flooded Strand
46%inclusion293 decks637 decks
35%synergy
Watery Grave
45%inclusion54 decks119 decks
4%synergy
Misty Rainforest
41%inclusion261 decks637 decks
30%synergy
Windswept Heath
41%inclusion260 decks637 decks
30%synergy
Overgrown Tomb
40%inclusion19 decks48 decks
-1%synergy
Godless Shrine
39%inclusion46 decks119 decks
-2%synergy
Yavimaya Coast
36%inclusion167 decks463 decks
9%synergy
Hinterland Harbor
35%inclusion160 decks463 decks
2%synergy
Glacial Fortress
34%inclusion219 decks637 decks
2%synergy
Tropical Island
33%inclusion154 decks463 decks
19%synergy
Prairie Stream
32%inclusion206 decks637 decks
-1%synergy
Rejuvenating Springs
32%inclusion149 decks463 decks
5%synergy
Savannah
32%inclusion147 decks463 decks
19%synergy
Raffine's Tower
31%inclusion37 decks119 decks
6%synergy
Spara's Headquarters
31%inclusion142 decks463 decks
3%synergy
Badlands
31%inclusion15 decks49 decks
17%synergy
Polluted Delta
30%inclusion193 decks637 decks
18%synergy
Adarkar Wastes
30%inclusion192 decks637 decks
7%synergy
Bayou
29%inclusion14 decks48 decks
16%synergy
Canopy Vista
29%inclusion134 decks463 decks
-7%synergy
Tundra
29%inclusion182 decks637 decks
15%synergy
Brushland
29%inclusion132 decks463 decks
9%synergy
Sea of Clouds
28%inclusion178 decks637 decks
3%synergy
Volcanic Island
28%inclusion18 decks65 decks
14%synergy
Mana Confluence
27%inclusion175 decks637 decks
21%synergy
Scalding Tarn
27%inclusion175 decks637 decks
17%synergy
City of Brass
27%inclusion171 decks637 decks
19%synergy
Marsh Flats
26%inclusion168 decks637 decks
16%synergy
Verdant Catacombs
26%inclusion168 decks637 decks
16%synergy
Steam Vents
26%inclusion17 decks65 decks
-11%synergy
Bountiful Promenade
26%inclusion121 decks463 decks
4%synergy
Undercity Sewers
26%inclusion31 decks119 decks
15%synergy
Underground Sea
26%inclusion31 decks119 decks
12%synergy
Wooded Foothills
26%inclusion164 decks637 decks
15%synergy
Sunpetal Grove
26%inclusion119 decks463 decks
-2%synergy
Dreamroot Cascade
25%inclusion118 decks463 decks
4%synergy
Cavern of Souls
25%inclusion161 decks637 decks
18%synergy
Arcane Sanctum
25%inclusion30 decks119 decks
-3%synergy
Stomping Ground
24%inclusion11 decks45 decks
-16%synergy
Sunken Hollow
24%inclusion29 decks119 decks
-10%synergy
Scrubland
23%inclusion27 decks119 decks
9%synergy
Gemstone Caverns
22%inclusion142 decks637 decks
17%synergy
Seaside Citadel
22%inclusion103 decks463 decks
-5%synergy
Taiga
22%inclusion10 decks45 decks
9%synergy
Arid Mesa
22%inclusion138 decks637 decks
11%synergy