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%inclusion253 decks1.91K decks
Top Commanders
Brago, King Eternal
0.2%inclusion23 decks11.8K decks
Abdel Adrian, Gorion's Ward // Candlekeep Sage
0.4%inclusion17 decks4.22K decks
Yorion, Sky Nomad
0.6%inclusion15 decks2.36K decks
Lagrella, the Magpie
0.8%inclusion14 decks1.79K decks
Aminatou, the Fateshifter
0.2%inclusion12 decks6.58K decks
Sharuum the Hegemon
0.4%inclusion12 decks2.75K decks
Jodah, Archmage Eternal
0.1%inclusion8 decks8.47K decks
Reaper King
0.1%inclusion8 decks7.10K decks
Helga, Skittish Seer
0.1%inclusion7 decks13.7K decks
Bane, Lord of Darkness
0.3%inclusion6 decks2.29K decks
The Wandering Minstrel
0.1%inclusion6 decks10.9K decks
Hashaton, Scarab's Fist
0.0%inclusion6 decks18.9K decks
Zinnia, Valley's Voice
0.0%inclusion5 decks14.4K decks
Sefris of the Hidden Ways
0.0%inclusion5 decks10.2K decks
Niko, Light of Hope
0.1%inclusion4 decks7.10K decks
Livio, Oathsworn Sentinel // Sakashima of a Thousand Faces
8.3%inclusion4 decks48 decks
Kyodai, Soul of Kamigawa
0.2%inclusion4 decks2.35K decks
New Cards
Katara, the Fearless
72%inclusion203 decks282 decks
69%synergy
Airbender Ascension
27%inclusion76 decks281 decks
24%synergy
Badgermole Cub
25%inclusion65 decks265 decks
20%synergy
Aang, Swift Savior
16%inclusion44 decks275 decks
11%synergy
Avatar's Wrath
15%inclusion42 decks276 decks
11%synergy
High Synergy Cards
Restoration Angel
82%inclusion410 decks502 decks
79%synergy
Chameleon, Master of Disguise
82%inclusion255 decks312 decks
79%synergy
Evil Twin
75%inclusion89 decks118 decks
74%synergy
Clever Impersonator
74%inclusion371 decks502 decks
72%synergy
Starfield Vocalist
74%inclusion244 decks331 decks
71%synergy
Stunt Double
69%inclusion344 decks502 decks
68%synergy
Altered Ego
68%inclusion226 decks332 decks
67%synergy
Naga Fleshcrafter
67%inclusion252 decks377 decks
66%synergy
Waxen Shapethief
66%inclusion269 decks405 decks
66%synergy
Vizier of Many Faces
66%inclusion330 decks502 decks
65%synergy
Top Cards
Phyrexian Metamorph
72%inclusion360 decks502 decks
64%synergy
Dack's Duplicate
65%inclusion41 decks63 decks
65%synergy
Clone
65%inclusion324 decks502 decks
64%synergy
Spark Double
65%inclusion324 decks502 decks
58%synergy
Mirrorhall Mimic
63%inclusion318 decks502 decks
62%synergy
Phantasmal Image
60%inclusion302 decks502 decks
57%synergy
Copycrook
59%inclusion273 decks462 decks
59%synergy
Birds of Paradise
58%inclusion192 decks332 decks
30%synergy
Callidus Assassin
58%inclusion68 decks118 decks
56%synergy
Sakashima the Impostor
56%inclusion281 decks502 decks
54%synergy
Game Changers
Ancient Tomb
26%inclusion133 decks502 decks
17%synergy
Demonic Tutor
26%inclusion31 decks118 decks
6%synergy
Gaea's Cradle
24%inclusion80 decks332 decks
18%synergy
Worldly Tutor
24%inclusion79 decks332 decks
12%synergy
Chrome Mox
22%inclusion112 decks502 decks
16%synergy
Mox Diamond
19%inclusion96 decks502 decks
15%synergy
Mana Vault
18%inclusion91 decks502 decks
12%synergy
Crop Rotation
15%inclusion49 decks332 decks
5%synergy
Grim Monolith
13%inclusion63 decks502 decks
11%synergy
Lion's Eye Diamond
11%inclusion56 decks502 decks
9%synergy
Creatures
Flesh Duplicate
55%inclusion274 decks502 decks
53%synergy
Sakashima of a Thousand Faces
53%inclusion267 decks502 decks
50%synergy
Noble Hierarch
52%inclusion174 decks332 decks
37%synergy
Avacyn's Pilgrim
52%inclusion172 decks332 decks
39%synergy
Visage Bandit
51%inclusion243 decks477 decks
51%synergy
Gigantoplasm
49%inclusion245 decks502 decks
49%synergy
Icewind Stalwart
49%inclusion244 decks502 decks
48%synergy
Emiel the Blessed
47%inclusion157 decks332 decks
44%synergy
Delighted Halfling
47%inclusion157 decks332 decks
35%synergy
Metamorphosis Fanatic
47%inclusion39 decks83 decks
46%synergy
Eternal Witness
46%inclusion154 decks332 decks
29%synergy
Mirror Image
46%inclusion232 decks502 decks
46%synergy
Preston, the Vanisher
46%inclusion231 decks502 decks
45%synergy
Superior Spider-Man
44%inclusion15 decks34 decks
42%synergy
Glasspool Mimic
44%inclusion220 decks502 decks
41%synergy
Kroxa and Kunoros
44%inclusion21 decks48 decks
43%synergy
Sister Hospitaller
43%inclusion51 decks118 decks
42%synergy
Llanowar Elves
42%inclusion139 decks332 decks
22%synergy
Soulherder
40%inclusion201 decks502 decks
36%synergy
Colossal Grave-Reaver
38%inclusion10 decks26 decks
33%synergy
Wall of Stolen Identity
38%inclusion193 decks502 decks
38%synergy
Sakashima's Student
37%inclusion186 decks502 decks
36%synergy
Roaming Throne
37%inclusion186 decks502 decks
30%synergy
Elvish Mystic
36%inclusion121 decks332 decks
20%synergy
Jwari Shapeshifter
34%inclusion169 decks502 decks
34%synergy
Ardyn, the Usurper
31%inclusion16 decks51 decks
30%synergy
Charming Prince
30%inclusion149 decks502 decks
28%synergy
Fyndhorn Elves
28%inclusion92 decks332 decks
17%synergy
Faeburrow Elder
28%inclusion92 decks332 decks
17%synergy
Bloom Tender
27%inclusion89 decks332 decks
19%synergy
Gyruda, Doom of Depths
26%inclusion31 decks118 decks
25%synergy
Elvish Spirit Guide
26%inclusion87 decks332 decks
22%synergy
Mardu Siegebreaker
25%inclusion7 decks28 decks
19%synergy
Baleful Strix
25%inclusion29 decks118 decks
11%synergy
Thassa, Deep-Dwelling
24%inclusion121 decks502 decks
21%synergy
Solemn Simulacrum
23%inclusion117 decks502 decks
10%synergy
Deadpool, Trading Card
21%inclusion6 decks28 decks
19%synergy
Ratadrabik of Urborg
21%inclusion25 decks118 decks
19%synergy
Olivia, Crimson Bride
21%inclusion10 decks48 decks
19%synergy
Cloud of Faeries
21%inclusion104 decks502 decks
19%synergy
Flickerwisp
21%inclusion103 decks502 decks
19%synergy
Displacer Kitten
20%inclusion101 decks502 decks
15%synergy
Anger
19%inclusion12 decks63 decks
13%synergy
Coiling Oracle
19%inclusion63 decks332 decks
13%synergy
Grand Abolisher
18%inclusion90 decks502 decks
9%synergy
Ruthless Technomancer
18%inclusion21 decks118 decks
16%synergy
Voice of Victory
18%inclusion67 decks381 decks
11%synergy
Wispweaver Angel
17%inclusion86 decks502 decks
17%synergy
Hoarding Broodlord
17%inclusion20 decks118 decks
15%synergy
Deadeye Navigator
17%inclusion85 decks502 decks
15%synergy
Instants
Ephemerate
53%inclusion267 decks502 decks
47%synergy
Cloudshift
43%inclusion218 decks502 decks
40%synergy
Swords to Plowshares
38%inclusion190 decks502 decks
-24%synergy
Essence Flux
37%inclusion185 decks502 decks
34%synergy
Momentary Blink
29%inclusion148 decks502 decks
27%synergy
Chord of Calling
27%inclusion89 decks332 decks
21%synergy
Path to Exile
25%inclusion124 decks502 decks
-22%synergy
Counterspell
24%inclusion121 decks502 decks
-18%synergy
Ghostly Flicker
23%inclusion113 decks502 decks
18%synergy
An Offer You Can't Refuse
23%inclusion113 decks502 decks
-1%synergy
Eerie Interlude
19%inclusion97 decks502 decks
16%synergy
Cabal Ritual
19%inclusion22 decks118 decks
14%synergy
Swan Song
18%inclusion88 decks502 decks
0%synergy
Force of Will
15%inclusion75 decks502 decks
5%synergy
Silence
15%inclusion74 decks502 decks
8%synergy
Pact of Negation
15%inclusion74 decks502 decks
8%synergy
Enlightened Tutor
15%inclusion74 decks502 decks
-1%synergy
Dovin's Veto
14%inclusion70 decks502 decks
-4%synergy
Fierce Guardianship
13%inclusion65 decks502 decks
-5%synergy
Arcane Denial
13%inclusion64 decks502 decks
-8%synergy
Negate
13%inclusion63 decks502 decks
-9%synergy
Drown in the Loch
12%inclusion14 decks118 decks
7%synergy
Fell the Profane
12%inclusion11 decks95 decks
3%synergy
Cyclonic Rift
11%inclusion57 decks502 decks
-12%synergy
Eladamri's Call
11%inclusion37 decks332 decks
2%synergy
Despark
11%inclusion13 decks118 decks
-3%synergy
Lae'zel's Acrobatics
10%inclusion50 decks502 decks
8%synergy
Mindbreak Trap
10%inclusion49 decks502 decks
5%synergy
Parting Gust
10%inclusion43 decks451 decks
8%synergy
Lim-Dûl's Vault
9.3%inclusion11 decks118 decks
6%synergy
Tainted Pact
9.3%inclusion11 decks118 decks
6%synergy
Beast Within
9.0%inclusion30 decks332 decks
-26%synergy
Flicker of Fate
8.8%inclusion44 decks502 decks
7%synergy
Generous Gift
8.8%inclusion44 decks502 decks
-14%synergy
Heroic Intervention
8.1%inclusion27 decks332 decks
-22%synergy
Planar Incision
8.0%inclusion40 decks502 decks
7%synergy
Desperate Ritual
7.9%inclusion5 decks63 decks
5%synergy
Pyretic Ritual
7.9%inclusion5 decks63 decks
5%synergy
Displace
7.8%inclusion39 decks502 decks
6%synergy
Flusterstorm
7.8%inclusion39 decks502 decks
0%synergy
Snap
7.8%inclusion39 decks502 decks
0%synergy
Mana Drain
7.8%inclusion39 decks502 decks
-7%synergy
Blur
7.4%inclusion37 decks502 decks
6%synergy
Semester's End
7.2%inclusion36 decks502 decks
6%synergy
Utter End
6.8%inclusion8 decks118 decks
2%synergy
Brainstorm
6.8%inclusion34 decks502 decks
-12%synergy
Force of Negation
6.6%inclusion33 decks502 decks
-2%synergy
Abrupt Decay
6.4%inclusion3 decks47 decks
-3%synergy
Thrill of Possibility
6.3%inclusion4 decks63 decks
-3%synergy
Deflecting Swat
6.3%inclusion4 decks63 decks
-10%synergy
Sorceries
Dread Return
47%inclusion56 decks118 decks
42%synergy
Farseek
27%inclusion91 decks332 decks
-8%synergy
Nature's Lore
26%inclusion86 decks332 decks
-6%synergy
Finale of Devastation
21%inclusion69 decks332 decks
13%synergy
Rampant Growth
20%inclusion68 decks332 decks
-13%synergy
Three Visits
20%inclusion66 decks332 decks
-4%synergy
Nature's Rhythm
18%inclusion54 decks297 decks
14%synergy
Eldritch Evolution
17%inclusion57 decks332 decks
13%synergy
Cultivate
17%inclusion57 decks332 decks
-26%synergy
Culling Ritual
17%inclusion8 decks47 decks
6%synergy
Kodama's Reach
15%inclusion49 decks332 decks
-13%synergy
Damn
13%inclusion15 decks118 decks
-3%synergy
Green Sun's Zenith
12%inclusion40 decks332 decks
7%synergy
Persist
10%inclusion12 decks118 decks
8%synergy
Shared Roots
10%inclusion25 decks255 decks
4%synergy
Neoform
7.5%inclusion25 decks332 decks
4%synergy
Wargate
7.2%inclusion24 decks332 decks
5%synergy
Splash Portal
6.9%inclusion31 decks450 decks
6%synergy
Diabolic Tutor
6.8%inclusion8 decks118 decks
1%synergy
Calamity of Cinders
6.3%inclusion3 decks48 decks
6%synergy
Time Wipe
6.2%inclusion31 decks502 decks
1%synergy
Austere Command
6.0%inclusion30 decks502 decks
-6%synergy
Supreme Verdict
6.0%inclusion30 decks502 decks
-7%synergy
Stitch Together
5.9%inclusion7 decks118 decks
4%synergy
Diabolic Intent
5.9%inclusion7 decks118 decks
-2%synergy
Feed the Swarm
5.9%inclusion7 decks118 decks
-11%synergy
Irenicus's Vile Duplication
5.8%inclusion29 decks502 decks
3%synergy
Explore
5.4%inclusion18 decks332 decks
-4%synergy
Unmarked Grave
5.1%inclusion6 decks118 decks
3%synergy
Utility Artifacts
Panharmonicon
47%inclusion237 decks502 decks
43%synergy
Conjurer's Closet
13%inclusion63 decks502 decks
10%synergy
Wishclaw Talisman
11%inclusion13 decks118 decks
6%synergy
Mirror Box
11%inclusion55 decks502 decks
10%synergy
Swiftfoot Boots
7.4%inclusion37 decks502 decks
-20%synergy
The One Ring
6.8%inclusion34 decks502 decks
-2%synergy
Altar of the Brood
6.0%inclusion30 decks502 decks
5%synergy
Strionic Resonator
5.8%inclusion29 decks502 decks
3%synergy
Lightning Greaves
5.8%inclusion29 decks502 decks
-19%synergy
Enchantments
Wild Growth
31%inclusion102 decks332 decks
20%synergy
Animate Dead
27%inclusion32 decks118 decks
18%synergy
Teleportation Circle
21%inclusion104 decks502 decks
17%synergy
Food Chain
20%inclusion65 decks332 decks
18%synergy
Heartless Summoning
19%inclusion23 decks118 decks
18%synergy
Mystic Remora
19%inclusion95 decks502 decks
2%synergy
Utopia Sprawl
18%inclusion61 decks332 decks
11%synergy
Smothering Tithe
18%inclusion92 decks502 decks
-4%synergy
Rhystic Study
18%inclusion89 decks502 decks
-7%synergy
Elemental Bond
15%inclusion50 decks332 decks
10%synergy
Sneak Attack
14%inclusion9 decks63 decks
12%synergy
Touch the Spirit Realm
13%inclusion67 decks502 decks
11%synergy
Dance of the Dead
13%inclusion15 decks118 decks
11%synergy
Virtue of Knowledge
11%inclusion56 decks502 decks
9%synergy
Annie Joins Up
11%inclusion4 decks38 decks
-2%synergy
Carpet of Flowers
10%inclusion33 decks332 decks
7%synergy
Impact Tremors
10%inclusion6 decks63 decks
0%synergy
Crescent Island Temple
9.1%inclusion1 decks11 decks
8%synergy
Mortuary
8.5%inclusion10 decks118 decks
8%synergy
Mirror March
7.9%inclusion5 decks63 decks
7%synergy
Molten Echoes
7.9%inclusion5 decks63 decks
6%synergy
Sylvan Library
7.5%inclusion25 decks332 decks
-2%synergy
Guardian Project
6.6%inclusion22 decks332 decks
-1%synergy
Underworld Breach
6.3%inclusion4 decks63 decks
0%synergy
Northern Air Temple
5.6%inclusion1 decks18 decks
4%synergy
Planeswalkers
Saheeli Rai
6.3%inclusion4 decks63 decks
5%synergy
The Eternal Wanderer
5.6%inclusion28 decks502 decks
3%synergy
Utility Lands
Boseiju, Who Endures
39%inclusion129 decks332 decks
20%synergy
Otawara, Soaring City
26%inclusion131 decks502 decks
10%synergy
Reliquary Tower
20%inclusion100 decks502 decks
-10%synergy
Bojuka Bog
13%inclusion15 decks118 decks
-17%synergy
City of Traitors
11%inclusion56 decks502 decks
10%synergy
Yavimaya, Cradle of Growth
10%inclusion52 decks502 decks
2%synergy
Takenuma, Abandoned Mire
10%inclusion12 decks118 decks
1%synergy
Mistrise Village
8.7%inclusion33 decks379 decks
1%synergy
Peat Bog
7.6%inclusion9 decks118 decks
7%synergy
Shifting Woodland
7.5%inclusion24 decks318 decks
1%synergy
Alchemist's Refuge
7.2%inclusion24 decks332 decks
1%synergy
Crystal Vein
7.2%inclusion36 decks502 decks
6%synergy
Urza's Saga
7.0%inclusion35 decks502 decks
0%synergy
Witch's Cottage
6.8%inclusion8 decks118 decks
3%synergy
Phyrexian Tower
6.8%inclusion8 decks118 decks
-2%synergy
Dryad Arbor
6.0%inclusion20 decks332 decks
2%synergy
Rogue's Passage
5.8%inclusion29 decks502 decks
-15%synergy
Abandoned Air Temple
5.7%inclusion15 decks261 decks
1%synergy
Mortuary Mire
5.1%inclusion6 decks118 decks
1%synergy
Mana Artifacts
Arcane Signet
80%inclusion400 decks502 decks
7%synergy
Sol Ring
71%inclusion356 decks502 decks
-13%synergy
Talisman of Dominance
53%inclusion63 decks118 decks
21%synergy
Talisman of Hierarchy
42%inclusion50 decks118 decks
16%synergy
Fellwar Stone
41%inclusion207 decks502 decks
21%synergy
Talisman of Progress
31%inclusion158 decks502 decks
6%synergy
Dimir Signet
31%inclusion36 decks118 decks
5%synergy
Orzhov Signet
30%inclusion35 decks118 decks
5%synergy
Talisman of Creativity
25%inclusion16 decks63 decks
-3%synergy
Lotus Petal
24%inclusion121 decks502 decks
17%synergy
Talisman of Curiosity
23%inclusion78 decks332 decks
11%synergy
Azorius Signet
22%inclusion109 decks502 decks
-1%synergy
Talisman of Unity
19%inclusion64 decks332 decks
12%synergy
Talisman of Resilience
19%inclusion9 decks47 decks
6%synergy
Izzet Signet
19%inclusion12 decks63 decks
-6%synergy
Talisman of Indulgence
17%inclusion8 decks48 decks
-11%synergy
Talisman of Conviction
14%inclusion9 decks63 decks
-10%synergy
Mind Stone
13%inclusion66 decks502 decks
-2%synergy
Thought Vessel
12%inclusion59 decks502 decks
-6%synergy
Boros Signet
11%inclusion7 decks63 decks
-9%synergy
Relic of Legends
11%inclusion53 decks502 decks
8%synergy
Talisman of Impulse
9.1%inclusion4 decks44 decks
-1%synergy
Machine God's Effigy
7.0%inclusion35 decks502 decks
6%synergy
Commander's Sphere
6.6%inclusion33 decks502 decks
-6%synergy
Cursed Mirror
6.3%inclusion4 decks63 decks
1%synergy
Simic Signet
6.3%inclusion21 decks332 decks
-6%synergy
Relic of Sauron
6.3%inclusion3 decks48 decks
-2%synergy
Charcoal Diamond
5.9%inclusion7 decks118 decks
2%synergy
Thran Dynamo
5.6%inclusion28 decks502 decks
1%synergy
Mox Opal
5.2%inclusion26 decks502 decks
1%synergy
Mox Amber
5.2%inclusion26 decks502 decks
1%synergy
Lands
Command Tower
91%inclusion455 decks502 decks
16%synergy
Breeding Pool
63%inclusion208 decks332 decks
21%synergy
Temple Garden
58%inclusion192 decks332 decks
19%synergy
Exotic Orchard
53%inclusion267 decks502 decks
17%synergy
Hallowed Fountain
51%inclusion258 decks502 decks
12%synergy
Flooded Strand
49%inclusion246 decks502 decks
38%synergy
Watery Grave
47%inclusion56 decks118 decks
6%synergy
Windswept Heath
42%inclusion213 decks502 decks
32%synergy
Misty Rainforest
42%inclusion212 decks502 decks
31%synergy
Overgrown Tomb
40%inclusion19 decks47 decks
0%synergy
Godless Shrine
40%inclusion47 decks118 decks
-1%synergy
Tropical Island
37%inclusion122 decks332 decks
22%synergy
Savannah
34%inclusion113 decks332 decks
21%synergy
Rejuvenating Springs
34%inclusion113 decks332 decks
7%synergy
Spara's Headquarters
34%inclusion112 decks332 decks
5%synergy
Badlands
33%inclusion16 decks48 decks
20%synergy
Polluted Delta
32%inclusion163 decks502 decks
21%synergy
Raffine's Tower
32%inclusion38 decks118 decks
7%synergy
Prairie Stream
31%inclusion156 decks502 decks
-3%synergy
Glacial Fortress
30%inclusion153 decks502 decks
-1%synergy
Yavimaya Coast
30%inclusion101 decks332 decks
3%synergy
Volcanic Island
30%inclusion19 decks63 decks
16%synergy
Bayou
30%inclusion14 decks47 decks
16%synergy
Scalding Tarn
29%inclusion147 decks502 decks
18%synergy
Sea of Clouds
29%inclusion146 decks502 decks
4%synergy
Marsh Flats
29%inclusion145 decks502 decks
18%synergy
Tundra
29%inclusion145 decks502 decks
15%synergy
Mana Confluence
29%inclusion144 decks502 decks
22%synergy
Steam Vents
29%inclusion18 decks63 decks
-9%synergy
Hinterland Harbor
28%inclusion94 decks332 decks
-4%synergy
City of Brass
28%inclusion141 decks502 decks
21%synergy
Verdant Catacombs
28%inclusion139 decks502 decks
17%synergy
Bountiful Promenade
27%inclusion90 decks332 decks
5%synergy
Undercity Sewers
26%inclusion30 decks114 decks
15%synergy
Wooded Foothills
26%inclusion132 decks502 decks
16%synergy
Underground Sea
26%inclusion31 decks118 decks
12%synergy
Adarkar Wastes
26%inclusion131 decks502 decks
3%synergy
Cavern of Souls
25%inclusion128 decks502 decks
18%synergy
Arcane Sanctum
25%inclusion30 decks118 decks
-3%synergy
Stomping Ground
25%inclusion11 decks44 decks
-16%synergy
Arid Mesa
25%inclusion125 decks502 decks
15%synergy
Canopy Vista
24%inclusion79 decks332 decks
-13%synergy
Scrubland
24%inclusion28 decks118 decks
10%synergy
Sunken Hollow
24%inclusion28 decks118 decks
-10%synergy
Brushland
23%inclusion78 decks332 decks
4%synergy
Gemstone Caverns
23%inclusion117 decks502 decks
18%synergy
Dreamroot Cascade
23%inclusion77 decks332 decks
2%synergy
Sunpetal Grove
23%inclusion77 decks332 decks
-4%synergy
Taiga
23%inclusion10 decks44 decks
10%synergy
Sacred Foundry
22%inclusion14 decks63 decks
-14%synergy