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 decks1.98K decks
Top Commanders
Brago, King Eternal
0.2%inclusion23 decks11.8K decks
Abdel Adrian, Gorion's Ward // Candlekeep Sage
0.4%inclusion17 decks4.23K 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 decks6.57K decks
Sharuum the Hegemon
0.4%inclusion12 decks2.75K decks
Jodah, Archmage Eternal
0.1%inclusion8 decks8.46K decks
Reaper King
0.1%inclusion8 decks7.10K decks
Helga, Skittish Seer
0.1%inclusion7 decks13.8K 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 decks7.12K decks
Livio, Oathsworn Sentinel // Sakashima of a Thousand Faces
8.3%inclusion4 decks48 decks
Roon of the Hidden Realm
0.1%inclusion4 decks3.12K decks
New Cards
Katara, the Fearless
72%inclusion204 decks282 decks
69%synergy
Airbender Ascension
27%inclusion76 decks281 decks
24%synergy
Badgermole Cub
24%inclusion64 decks265 decks
19%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%inclusion411 decks501 decks
80%synergy
Chameleon, Master of Disguise
81%inclusion254 decks312 decks
79%synergy
Evil Twin
75%inclusion88 decks117 decks
74%synergy
Clever Impersonator
74%inclusion370 decks501 decks
71%synergy
Starfield Vocalist
73%inclusion243 decks331 decks
71%synergy
Stunt Double
68%inclusion343 decks501 decks
68%synergy
Altered Ego
67%inclusion223 decks331 decks
66%synergy
Naga Fleshcrafter
67%inclusion251 decks377 decks
66%synergy
Waxen Shapethief
66%inclusion268 decks405 decks
66%synergy
Vizier of Many Faces
66%inclusion329 decks501 decks
65%synergy
Top Cards
Phyrexian Metamorph
72%inclusion360 decks501 decks
64%synergy
Spark Double
65%inclusion324 decks501 decks
58%synergy
Dack's Duplicate
65%inclusion40 decks62 decks
64%synergy
Clone
64%inclusion322 decks501 decks
63%synergy
Mirrorhall Mimic
63%inclusion318 decks501 decks
63%synergy
Phantasmal Image
60%inclusion301 decks501 decks
57%synergy
Copycrook
59%inclusion272 decks462 decks
58%synergy
Birds of Paradise
58%inclusion193 decks331 decks
31%synergy
Callidus Assassin
58%inclusion68 decks117 decks
57%synergy
Sakashima the Impostor
56%inclusion281 decks501 decks
54%synergy
Game Changers
Ancient Tomb
27%inclusion133 decks501 decks
17%synergy
Demonic Tutor
26%inclusion31 decks117 decks
7%synergy
Gaea's Cradle
24%inclusion80 decks331 decks
18%synergy
Worldly Tutor
24%inclusion78 decks331 decks
11%synergy
Chrome Mox
22%inclusion112 decks501 decks
16%synergy
Mox Diamond
19%inclusion96 decks501 decks
15%synergy
Mana Vault
18%inclusion91 decks501 decks
12%synergy
Crop Rotation
15%inclusion49 decks331 decks
5%synergy
Grim Monolith
12%inclusion62 decks501 decks
10%synergy
Lion's Eye Diamond
12%inclusion58 decks501 decks
10%synergy
Creatures
Flesh Duplicate
54%inclusion273 decks501 decks
53%synergy
Sakashima of a Thousand Faces
53%inclusion266 decks501 decks
50%synergy
Noble Hierarch
53%inclusion174 decks331 decks
37%synergy
Avacyn's Pilgrim
52%inclusion171 decks331 decks
39%synergy
Visage Bandit
51%inclusion244 decks477 decks
51%synergy
Icewind Stalwart
49%inclusion245 decks501 decks
49%synergy
Gigantoplasm
49%inclusion244 decks501 decks
48%synergy
Delighted Halfling
48%inclusion158 decks331 decks
36%synergy
Emiel the Blessed
47%inclusion157 decks331 decks
44%synergy
Metamorphosis Fanatic
47%inclusion39 decks83 decks
46%synergy
Eternal Witness
47%inclusion155 decks331 decks
29%synergy
Mirror Image
46%inclusion231 decks501 decks
46%synergy
Preston, the Vanisher
46%inclusion231 decks501 decks
45%synergy
Glasspool Mimic
45%inclusion223 decks501 decks
42%synergy
Superior Spider-Man
44%inclusion15 decks34 decks
42%synergy
Sister Hospitaller
43%inclusion50 decks117 decks
42%synergy
Kroxa and Kunoros
43%inclusion20 decks47 decks
42%synergy
Llanowar Elves
42%inclusion140 decks331 decks
22%synergy
Soulherder
40%inclusion201 decks501 decks
36%synergy
Colossal Grave-Reaver
38%inclusion10 decks26 decks
33%synergy
Wall of Stolen Identity
38%inclusion190 decks501 decks
37%synergy
Roaming Throne
37%inclusion186 decks501 decks
30%synergy
Sakashima's Student
37%inclusion185 decks501 decks
36%synergy
Elvish Mystic
37%inclusion122 decks331 decks
21%synergy
Jwari Shapeshifter
34%inclusion169 decks501 decks
34%synergy
Ardyn, the Usurper
31%inclusion16 decks51 decks
30%synergy
Charming Prince
30%inclusion149 decks501 decks
28%synergy
Fyndhorn Elves
28%inclusion92 decks331 decks
18%synergy
Faeburrow Elder
28%inclusion92 decks331 decks
17%synergy
Bloom Tender
27%inclusion89 decks331 decks
19%synergy
Elvish Spirit Guide
27%inclusion88 decks331 decks
23%synergy
Gyruda, Doom of Depths
26%inclusion30 decks117 decks
24%synergy
Mardu Siegebreaker
25%inclusion7 decks28 decks
19%synergy
Baleful Strix
25%inclusion29 decks117 decks
12%synergy
Thassa, Deep-Dwelling
24%inclusion121 decks501 decks
21%synergy
Solemn Simulacrum
23%inclusion117 decks501 decks
10%synergy
Deadpool, Trading Card
21%inclusion6 decks28 decks
19%synergy
Ratadrabik of Urborg
21%inclusion25 decks117 decks
19%synergy
Olivia, Crimson Bride
21%inclusion10 decks47 decks
20%synergy
Cloud of Faeries
21%inclusion104 decks501 decks
19%synergy
Flickerwisp
21%inclusion103 decks501 decks
19%synergy
Displacer Kitten
20%inclusion100 decks501 decks
15%synergy
Anger
19%inclusion12 decks62 decks
13%synergy
Coiling Oracle
19%inclusion63 decks331 decks
13%synergy
Grand Abolisher
18%inclusion90 decks501 decks
9%synergy
Ruthless Technomancer
18%inclusion21 decks117 decks
16%synergy
Voice of Victory
18%inclusion67 decks381 decks
11%synergy
Hoarding Broodlord
17%inclusion20 decks117 decks
15%synergy
Wispweaver Angel
17%inclusion85 decks501 decks
17%synergy
Deadeye Navigator
17%inclusion85 decks501 decks
15%synergy
Instants
Ephemerate
53%inclusion268 decks501 decks
48%synergy
Cloudshift
44%inclusion219 decks501 decks
40%synergy
Swords to Plowshares
38%inclusion190 decks501 decks
-24%synergy
Essence Flux
37%inclusion184 decks501 decks
34%synergy
Momentary Blink
30%inclusion148 decks501 decks
27%synergy
Chord of Calling
26%inclusion87 decks331 decks
21%synergy
Path to Exile
25%inclusion124 decks501 decks
-22%synergy
Counterspell
24%inclusion120 decks501 decks
-18%synergy
An Offer You Can't Refuse
23%inclusion114 decks501 decks
-1%synergy
Ghostly Flicker
23%inclusion113 decks501 decks
18%synergy
Eerie Interlude
20%inclusion98 decks501 decks
16%synergy
Cabal Ritual
19%inclusion22 decks117 decks
14%synergy
Swan Song
18%inclusion88 decks501 decks
0%synergy
Silence
15%inclusion74 decks501 decks
8%synergy
Pact of Negation
15%inclusion74 decks501 decks
8%synergy
Force of Will
15%inclusion74 decks501 decks
5%synergy
Enlightened Tutor
14%inclusion72 decks501 decks
-1%synergy
Dovin's Veto
14%inclusion70 decks501 decks
-4%synergy
Fierce Guardianship
13%inclusion65 decks501 decks
-5%synergy
Arcane Denial
13%inclusion63 decks501 decks
-8%synergy
Negate
13%inclusion63 decks501 decks
-9%synergy
Drown in the Loch
12%inclusion14 decks117 decks
7%synergy
Fell the Profane
12%inclusion11 decks95 decks
3%synergy
Cyclonic Rift
11%inclusion57 decks501 decks
-12%synergy
Eladamri's Call
11%inclusion37 decks331 decks
2%synergy
Despark
11%inclusion13 decks117 decks
-3%synergy
Lae'zel's Acrobatics
10%inclusion49 decks501 decks
8%synergy
Mindbreak Trap
10%inclusion49 decks501 decks
5%synergy
Parting Gust
10%inclusion43 decks451 decks
8%synergy
Tainted Pact
9.4%inclusion11 decks117 decks
6%synergy
Beast Within
9.1%inclusion30 decks331 decks
-26%synergy
Flicker of Fate
8.8%inclusion44 decks501 decks
7%synergy
Generous Gift
8.8%inclusion44 decks501 decks
-14%synergy
Lim-Dûl's Vault
8.5%inclusion10 decks117 decks
5%synergy
Flusterstorm
8.2%inclusion41 decks501 decks
1%synergy
Heroic Intervention
8.2%inclusion27 decks331 decks
-22%synergy
Desperate Ritual
8.1%inclusion5 decks62 decks
5%synergy
Pyretic Ritual
8.1%inclusion5 decks62 decks
5%synergy
Planar Incision
8.0%inclusion40 decks501 decks
7%synergy
Displace
7.8%inclusion39 decks501 decks
6%synergy
Mana Drain
7.8%inclusion39 decks501 decks
-7%synergy
Snap
7.6%inclusion38 decks501 decks
0%synergy
Blur
7.4%inclusion37 decks501 decks
6%synergy
Semester's End
7.2%inclusion36 decks501 decks
6%synergy
Utter End
6.8%inclusion8 decks117 decks
2%synergy
Brainstorm
6.8%inclusion34 decks501 decks
-12%synergy
Abrupt Decay
6.5%inclusion3 decks46 decks
-3%synergy
Thrill of Possibility
6.5%inclusion4 decks62 decks
-3%synergy
Deflecting Swat
6.5%inclusion4 decks62 decks
-10%synergy
Mental Misstep
6.2%inclusion31 decks501 decks
0%synergy
Sorceries
Dread Return
48%inclusion56 decks117 decks
43%synergy
Farseek
27%inclusion91 decks331 decks
-8%synergy
Nature's Lore
26%inclusion86 decks331 decks
-6%synergy
Finale of Devastation
21%inclusion70 decks331 decks
14%synergy
Rampant Growth
21%inclusion68 decks331 decks
-13%synergy
Three Visits
20%inclusion66 decks331 decks
-4%synergy
Nature's Rhythm
18%inclusion54 decks297 decks
14%synergy
Eldritch Evolution
18%inclusion58 decks331 decks
13%synergy
Culling Ritual
17%inclusion8 decks46 decks
6%synergy
Cultivate
17%inclusion57 decks331 decks
-26%synergy
Kodama's Reach
15%inclusion49 decks331 decks
-13%synergy
Damn
13%inclusion15 decks117 decks
-3%synergy
Green Sun's Zenith
13%inclusion42 decks331 decks
7%synergy
Persist
10%inclusion12 decks117 decks
8%synergy
Shared Roots
10%inclusion26 decks255 decks
5%synergy
Neoform
7.6%inclusion25 decks331 decks
4%synergy
Wargate
7.3%inclusion24 decks331 decks
5%synergy
Splash Portal
6.9%inclusion31 decks450 decks
6%synergy
Diabolic Tutor
6.8%inclusion8 decks117 decks
1%synergy
Calamity of Cinders
6.3%inclusion3 decks48 decks
6%synergy
Time Wipe
6.2%inclusion31 decks501 decks
1%synergy
Austere Command
6.0%inclusion30 decks501 decks
-6%synergy
Supreme Verdict
6.0%inclusion30 decks501 decks
-7%synergy
Stitch Together
6.0%inclusion7 decks117 decks
4%synergy
Diabolic Intent
6.0%inclusion7 decks117 decks
-2%synergy
Feed the Swarm
6.0%inclusion7 decks117 decks
-11%synergy
Irenicus's Vile Duplication
5.8%inclusion29 decks501 decks
3%synergy
Explore
5.4%inclusion18 decks331 decks
-4%synergy
Unmarked Grave
5.1%inclusion6 decks117 decks
3%synergy
Utility Artifacts
Panharmonicon
48%inclusion238 decks501 decks
44%synergy
Conjurer's Closet
13%inclusion63 decks501 decks
10%synergy
Wishclaw Talisman
11%inclusion13 decks117 decks
6%synergy
Mirror Box
11%inclusion55 decks501 decks
10%synergy
Swiftfoot Boots
7.4%inclusion37 decks501 decks
-20%synergy
The One Ring
6.6%inclusion33 decks501 decks
-2%synergy
Altar of the Brood
6.0%inclusion30 decks501 decks
5%synergy
Strionic Resonator
5.8%inclusion29 decks501 decks
3%synergy
Lightning Greaves
5.8%inclusion29 decks501 decks
-19%synergy
Enchantments
Wild Growth
31%inclusion101 decks331 decks
20%synergy
Animate Dead
27%inclusion32 decks117 decks
18%synergy
Teleportation Circle
21%inclusion104 decks501 decks
17%synergy
Heartless Summoning
20%inclusion23 decks117 decks
19%synergy
Food Chain
20%inclusion65 decks331 decks
18%synergy
Mystic Remora
19%inclusion95 decks501 decks
3%synergy
Utopia Sprawl
19%inclusion62 decks331 decks
11%synergy
Smothering Tithe
18%inclusion91 decks501 decks
-4%synergy
Rhystic Study
17%inclusion86 decks501 decks
-7%synergy
Elemental Bond
15%inclusion50 decks331 decks
10%synergy
Sneak Attack
15%inclusion9 decks62 decks
12%synergy
Touch the Spirit Realm
14%inclusion68 decks501 decks
12%synergy
Dance of the Dead
13%inclusion15 decks117 decks
11%synergy
Virtue of Knowledge
11%inclusion56 decks501 decks
9%synergy
Annie Joins Up
11%inclusion4 decks38 decks
-2%synergy
Carpet of Flowers
10%inclusion34 decks331 decks
7%synergy
Impact Tremors
10%inclusion6 decks62 decks
0%synergy
Crescent Island Temple
9.1%inclusion1 decks11 decks
8%synergy
Mirror March
8.1%inclusion5 decks62 decks
7%synergy
Molten Echoes
8.1%inclusion5 decks62 decks
7%synergy
Mortuary
7.7%inclusion9 decks117 decks
8%synergy
Sylvan Library
7.6%inclusion25 decks331 decks
-2%synergy
Guardian Project
6.6%inclusion22 decks331 decks
-1%synergy
Underworld Breach
6.5%inclusion4 decks62 decks
0%synergy
Northern Air Temple
5.6%inclusion1 decks18 decks
4%synergy
Planeswalkers
Saheeli Rai
6.5%inclusion4 decks62 decks
5%synergy
The Eternal Wanderer
5.6%inclusion28 decks501 decks
3%synergy
Utility Lands
Boseiju, Who Endures
39%inclusion128 decks331 decks
20%synergy
Otawara, Soaring City
26%inclusion132 decks501 decks
10%synergy
Reliquary Tower
20%inclusion100 decks501 decks
-10%synergy
Bojuka Bog
13%inclusion15 decks117 decks
-17%synergy
City of Traitors
11%inclusion57 decks501 decks
10%synergy
Yavimaya, Cradle of Growth
11%inclusion53 decks501 decks
2%synergy
Takenuma, Abandoned Mire
10%inclusion12 decks117 decks
1%synergy
Mistrise Village
8.4%inclusion32 decks379 decks
0%synergy
Peat Bog
7.7%inclusion9 decks117 decks
7%synergy
Shifting Woodland
7.2%inclusion23 decks318 decks
0%synergy
Crystal Vein
7.2%inclusion36 decks501 decks
6%synergy
Urza's Saga
7.0%inclusion35 decks501 decks
0%synergy
Alchemist's Refuge
6.9%inclusion23 decks331 decks
1%synergy
Witch's Cottage
6.8%inclusion8 decks117 decks
3%synergy
Phyrexian Tower
6.8%inclusion8 decks117 decks
-2%synergy
Dryad Arbor
6.0%inclusion20 decks331 decks
2%synergy
Rogue's Passage
5.8%inclusion29 decks501 decks
-15%synergy
Abandoned Air Temple
5.7%inclusion15 decks261 decks
1%synergy
Mortuary Mire
5.1%inclusion6 decks117 decks
1%synergy
Mana Artifacts
Arcane Signet
79%inclusion397 decks501 decks
7%synergy
Sol Ring
71%inclusion356 decks501 decks
-13%synergy
Talisman of Dominance
54%inclusion63 decks117 decks
21%synergy
Talisman of Hierarchy
43%inclusion50 decks117 decks
17%synergy
Fellwar Stone
41%inclusion204 decks501 decks
20%synergy
Talisman of Progress
32%inclusion158 decks501 decks
6%synergy
Orzhov Signet
30%inclusion35 decks117 decks
6%synergy
Dimir Signet
30%inclusion35 decks117 decks
4%synergy
Talisman of Creativity
26%inclusion16 decks62 decks
-3%synergy
Lotus Petal
24%inclusion121 decks501 decks
17%synergy
Talisman of Curiosity
24%inclusion78 decks331 decks
11%synergy
Azorius Signet
22%inclusion108 decks501 decks
-1%synergy
Talisman of Resilience
20%inclusion9 decks46 decks
7%synergy
Talisman of Unity
19%inclusion64 decks331 decks
12%synergy
Izzet Signet
18%inclusion11 decks62 decks
-7%synergy
Talisman of Indulgence
17%inclusion8 decks47 decks
-11%synergy
Talisman of Conviction
15%inclusion9 decks62 decks
-10%synergy
Mind Stone
13%inclusion65 decks501 decks
-2%synergy
Thought Vessel
12%inclusion58 decks501 decks
-6%synergy
Boros Signet
11%inclusion7 decks62 decks
-9%synergy
Relic of Legends
11%inclusion53 decks501 decks
8%synergy
Talisman of Impulse
9.3%inclusion4 decks43 decks
-1%synergy
Machine God's Effigy
6.8%inclusion34 decks501 decks
6%synergy
Commander's Sphere
6.6%inclusion33 decks501 decks
-6%synergy
Cursed Mirror
6.5%inclusion4 decks62 decks
1%synergy
Relic of Sauron
6.4%inclusion3 decks47 decks
-2%synergy
Simic Signet
6.3%inclusion21 decks331 decks
-6%synergy
Charcoal Diamond
6.0%inclusion7 decks117 decks
2%synergy
Thran Dynamo
5.6%inclusion28 decks501 decks
1%synergy
Mox Amber
5.2%inclusion26 decks501 decks
1%synergy
Lands
Command Tower
91%inclusion455 decks501 decks
17%synergy
Breeding Pool
63%inclusion208 decks331 decks
22%synergy
Temple Garden
58%inclusion192 decks331 decks
19%synergy
Exotic Orchard
53%inclusion267 decks501 decks
17%synergy
Hallowed Fountain
52%inclusion260 decks501 decks
12%synergy
Flooded Strand
49%inclusion246 decks501 decks
38%synergy
Watery Grave
48%inclusion56 decks117 decks
7%synergy
Windswept Heath
43%inclusion213 decks501 decks
32%synergy
Misty Rainforest
42%inclusion212 decks501 decks
31%synergy
Overgrown Tomb
41%inclusion19 decks46 decks
1%synergy
Godless Shrine
40%inclusion47 decks117 decks
-1%synergy
Tropical Island
37%inclusion122 decks331 decks
23%synergy
Savannah
34%inclusion113 decks331 decks
21%synergy
Rejuvenating Springs
34%inclusion113 decks331 decks
7%synergy
Badlands
34%inclusion16 decks47 decks
21%synergy
Spara's Headquarters
34%inclusion112 decks331 decks
6%synergy
Polluted Delta
33%inclusion163 decks501 decks
21%synergy
Raffine's Tower
32%inclusion38 decks117 decks
8%synergy
Prairie Stream
31%inclusion156 decks501 decks
-3%synergy
Volcanic Island
31%inclusion19 decks62 decks
17%synergy
Glacial Fortress
31%inclusion153 decks501 decks
-1%synergy
Yavimaya Coast
31%inclusion101 decks331 decks
3%synergy
Bayou
30%inclusion14 decks46 decks
17%synergy
Scalding Tarn
29%inclusion147 decks501 decks
18%synergy
Sea of Clouds
29%inclusion146 decks501 decks
4%synergy
Steam Vents
29%inclusion18 decks62 decks
-9%synergy
Marsh Flats
29%inclusion145 decks501 decks
18%synergy
Tundra
29%inclusion145 decks501 decks
15%synergy
Mana Confluence
29%inclusion144 decks501 decks
22%synergy
Hinterland Harbor
28%inclusion94 decks331 decks
-4%synergy
City of Brass
28%inclusion141 decks501 decks
21%synergy
Verdant Catacombs
28%inclusion139 decks501 decks
17%synergy
Bountiful Promenade
27%inclusion90 decks331 decks
5%synergy
Underground Sea
26%inclusion31 decks117 decks
12%synergy
Wooded Foothills
26%inclusion132 decks501 decks
16%synergy
Undercity Sewers
26%inclusion30 decks114 decks
15%synergy
Adarkar Wastes
26%inclusion131 decks501 decks
3%synergy
Cavern of Souls
26%inclusion130 decks501 decks
19%synergy
Arcane Sanctum
26%inclusion30 decks117 decks
-2%synergy
Stomping Ground
26%inclusion11 decks43 decks
-15%synergy
Arid Mesa
25%inclusion125 decks501 decks
15%synergy
Scrubland
24%inclusion28 decks117 decks
10%synergy
Sunken Hollow
24%inclusion28 decks117 decks
-10%synergy
Canopy Vista
24%inclusion79 decks331 decks
-13%synergy
Brushland
24%inclusion78 decks331 decks
5%synergy
Gemstone Caverns
23%inclusion117 decks501 decks
18%synergy
Dreamroot Cascade
23%inclusion77 decks331 decks
2%synergy
Sunpetal Grove
23%inclusion77 decks331 decks
-4%synergy
Taiga
23%inclusion10 decks43 decks
10%synergy
Sacred Foundry
23%inclusion14 decks62 decks
-14%synergy