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%inclusion501 decks3.82K decks
Brago, King Eternal
0.2%inclusion23 decks12.4K decks
Abdel Adrian, Gorion's Ward // Candlekeep Sage
0.5%inclusion21 decks4.33K decks
Yorion, Sky Nomad
0.7%inclusion17 decks2.41K decks
Lagrella, the Magpie
0.7%inclusion12 decks1.84K decks
Sharuum the Hegemon
0.4%inclusion10 decks2.81K decks
Reaper King
0.1%inclusion9 decks7.91K decks
Aminatou, the Fateshifter
0.1%inclusion9 decks6.54K decks
The Wandering Minstrel
0.1%inclusion8 decks13.4K decks
Helga, Skittish Seer
0.0%inclusion7 decks15.7K decks
Jodah, Archmage Eternal
0.1%inclusion7 decks8.48K decks
Hashaton, Scarab's Fist
0.0%inclusion7 decks21.1K decks
Bane, Lord of Darkness
0.3%inclusion6 decks2.33K decks
Niko, Light of Hope
0.1%inclusion5 decks7.97K decks
Livio, Oathsworn Sentinel // Sakashima of a Thousand Faces
11%inclusion5 decks46 decks
Sefris of the Hidden Ways
0.0%inclusion5 decks10.7K decks
Sakashima of a Thousand Faces // Yoshimaru, Ever Faithful
1.0%inclusion5 decks486 decks
Zinnia, Valley's Voice
0.0%inclusion4 decks15.8K decks
New Cards
Bloodline Bidding
25%inclusion1 decks4 decks
22%synergy
Personify
3.1%inclusion6 decks192 decks
2%synergy
Sodden Verdure
2.3%inclusion4 decks171 decks
-4%synergy
Jubilation
1.8%inclusion3 decks171 decks
0%synergy
Chomping Changeling
1.7%inclusion3 decks175 decks
-1%synergy
High Synergy Cards
Restoration Angel
86%inclusion645 decks753 decks
83%synergy
Chameleon, Master of Disguise
81%inclusion481 decks594 decks
78%synergy
Evil Twin
77%inclusion82 decks107 decks
76%synergy
Starfield Vocalist
78%inclusion474 decks609 decks
75%synergy
Katara, the Fearless
79%inclusion424 decks538 decks
75%synergy
Clever Impersonator
78%inclusion584 decks753 decks
75%synergy
Naga Fleshcrafter
71%inclusion463 decks653 decks
70%synergy
Waxen Shapethief
71%inclusion480 decks680 decks
70%synergy
Stunt Double
70%inclusion525 decks753 decks
69%synergy
Vizier of Many Faces
70%inclusion524 decks753 decks
69%synergy
Top Cards
Phyrexian Metamorph
75%inclusion563 decks753 decks
67%synergy
Altered Ego
70%inclusion405 decks577 decks
69%synergy
Clone
68%inclusion514 decks753 decks
67%synergy
Spark Double
66%inclusion498 decks753 decks
60%synergy
Mirrorhall Mimic
65%inclusion487 decks753 decks
64%synergy
Copycrook
63%inclusion463 decks732 decks
63%synergy
Dack's Duplicate
62%inclusion38 decks61 decks
62%synergy
Phantasmal Image
62%inclusion468 decks753 decks
60%synergy
Ephemerate
60%inclusion451 decks753 decks
54%synergy
Icewind Stalwart
59%inclusion444 decks753 decks
59%synergy
Game Changers
Ancient Tomb
27%inclusion200 decks753 decks
17%synergy
Worldly Tutor
25%inclusion147 decks577 decks
13%synergy
Gaea's Cradle
24%inclusion137 decks577 decks
18%synergy
Chrome Mox
23%inclusion170 decks753 decks
17%synergy
Mana Vault
19%inclusion145 decks753 decks
13%synergy
Crop Rotation
18%inclusion106 decks577 decks
9%synergy
Mox Diamond
18%inclusion138 decks753 decks
14%synergy
Force of Will
18%inclusion138 decks753 decks
8%synergy
Lion's Eye Diamond
11%inclusion86 decks753 decks
10%synergy
Grim Monolith
10%inclusion78 decks753 decks
8%synergy
Creatures
Callidus Assassin
59%inclusion63 decks107 decks
58%synergy
Birds of Paradise
58%inclusion332 decks577 decks
30%synergy
Sakashima the Impostor
57%inclusion428 decks753 decks
55%synergy
Visage Bandit
57%inclusion422 decks744 decks
56%synergy
Mirror Image
55%inclusion415 decks753 decks
55%synergy
Flesh Duplicate
55%inclusion412 decks753 decks
53%synergy
Sakashima of a Thousand Faces
55%inclusion412 decks753 decks
52%synergy
Avacyn's Pilgrim
54%inclusion314 decks577 decks
42%synergy
Glasspool Mimic
52%inclusion390 decks753 decks
49%synergy
Emiel the Blessed
51%inclusion295 decks577 decks
48%synergy
Eternal Witness
51%inclusion292 decks577 decks
34%synergy
Noble Hierarch
50%inclusion289 decks577 decks
34%synergy
Gigantoplasm
50%inclusion374 decks753 decks
49%synergy
Preston, the Vanisher
49%inclusion366 decks753 decks
48%synergy
Delighted Halfling
47%inclusion269 decks577 decks
35%synergy
Llanowar Elves
45%inclusion260 decks577 decks
25%synergy
Metamorphosis Fanatic
45%inclusion38 decks85 decks
44%synergy
Superior Spider-Man
43%inclusion18 decks42 decks
41%synergy
Soulherder
41%inclusion312 decks753 decks
37%synergy
Roaming Throne
41%inclusion309 decks753 decks
35%synergy
Kroxa and Kunoros
40%inclusion18 decks45 decks
40%synergy
Sister Hospitaller
38%inclusion41 decks107 decks
37%synergy
Elvish Mystic
38%inclusion219 decks577 decks
22%synergy
Colossal Grave-Reaver
38%inclusion11 decks29 decks
33%synergy
Jwari Shapeshifter
38%inclusion283 decks753 decks
37%synergy
Wall of Stolen Identity
36%inclusion269 decks753 decks
35%synergy
Ardyn, the Usurper
35%inclusion20 decks57 decks
34%synergy
Sakashima's Student
34%inclusion255 decks753 decks
33%synergy
Elvish Spirit Guide
32%inclusion184 decks577 decks
28%synergy
Charming Prince
30%inclusion224 decks753 decks
28%synergy
Faeburrow Elder
29%inclusion168 decks577 decks
17%synergy
Gyruda, Doom of Depths
27%inclusion29 decks107 decks
26%synergy
Bloom Tender
27%inclusion155 decks577 decks
19%synergy
Badgermole Cub
26%inclusion138 decks525 decks
21%synergy
Fyndhorn Elves
25%inclusion146 decks577 decks
15%synergy
Baleful Strix
25%inclusion27 decks107 decks
12%synergy
Mardu Siegebreaker
25%inclusion8 decks32 decks
20%synergy
Thassa, Deep-Dwelling
24%inclusion183 decks753 decks
22%synergy
Flickerwisp
23%inclusion176 decks753 decks
22%synergy
Ratadrabik of Urborg
23%inclusion25 decks107 decks
21%synergy
Cloud of Faeries
22%inclusion163 decks753 decks
19%synergy
Coiling Oracle
21%inclusion123 decks577 decks
16%synergy
Displacer Kitten
20%inclusion150 decks753 decks
15%synergy
Anger
20%inclusion12 decks61 decks
13%synergy
Solemn Simulacrum
19%inclusion145 decks753 decks
7%synergy
Esper Sentinel
19%inclusion145 decks753 decks
0%synergy
Deadpool, Trading Card
19%inclusion6 decks32 decks
16%synergy
Voice of Victory
19%inclusion123 decks657 decks
12%synergy
Aang, Swift Savior
19%inclusion105 decks561 decks
14%synergy
Grand Abolisher
18%inclusion136 decks753 decks
9%synergy
Instants
Cloudshift
51%inclusion386 decks753 decks
48%synergy
Essence Flux
46%inclusion350 decks753 decks
43%synergy
Swords to Plowshares
42%inclusion314 decks753 decks
-20%synergy
Momentary Blink
30%inclusion229 decks753 decks
28%synergy
An Offer You Can't Refuse
29%inclusion218 decks753 decks
4%synergy
Path to Exile
28%inclusion209 decks753 decks
-20%synergy
Chord of Calling
25%inclusion147 decks577 decks
20%synergy
Ghostly Flicker
24%inclusion182 decks753 decks
19%synergy
Counterspell
23%inclusion176 decks753 decks
-18%synergy
Swan Song
20%inclusion149 decks753 decks
2%synergy
Cabal Ritual
19%inclusion20 decks107 decks
13%synergy
Silence
18%inclusion139 decks753 decks
12%synergy
Eerie Interlude
18%inclusion135 decks753 decks
14%synergy
Enlightened Tutor
17%inclusion127 decks753 decks
2%synergy
Fierce Guardianship
17%inclusion127 decks753 decks
-1%synergy
Pact of Negation
16%inclusion121 decks753 decks
9%synergy
Dovin's Veto
13%inclusion101 decks753 decks
-5%synergy
Mindbreak Trap
13%inclusion95 decks753 decks
8%synergy
Arcane Denial
12%inclusion94 decks753 decks
-8%synergy
Negate
12%inclusion93 decks753 decks
-9%synergy
Drown in the Loch
12%inclusion13 decks107 decks
7%synergy
Flusterstorm
11%inclusion86 decks753 decks
4%synergy
Heroic Intervention
11%inclusion64 decks577 decks
-19%synergy
Parting Gust
11%inclusion79 decks722 decks
9%synergy
Fell the Profane
10%inclusion10 decks96 decks
2%synergy
Cyclonic Rift
10%inclusion78 decks753 decks
-12%synergy
Tainted Pact
10%inclusion11 decks107 decks
7%synergy
Eladamri's Call
10%inclusion59 decks577 decks
1%synergy
Flicker of Fate
10%inclusion76 decks753 decks
8%synergy
Lae'zel's Acrobatics
10%inclusion72 decks753 decks
8%synergy
Force of Negation
10%inclusion72 decks753 decks
1%synergy
Despark
9.3%inclusion10 decks107 decks
-4%synergy
Beast Within
8.8%inclusion51 decks577 decks
-25%synergy
Generous Gift
8.8%inclusion66 decks753 decks
-13%synergy
Utter End
8.4%inclusion9 decks107 decks
4%synergy
Hide on the Ceiling
8.3%inclusion49 decks593 decks
7%synergy
Mental Misstep
8.2%inclusion62 decks753 decks
3%synergy
Snap
7.8%inclusion59 decks753 decks
0%synergy
Planar Incision
7.7%inclusion58 decks753 decks
6%synergy
Displace
7.6%inclusion57 decks753 decks
6%synergy
Lim-Dûl's Vault
7.5%inclusion8 decks107 decks
4%synergy
Semester's End
7.4%inclusion56 decks753 decks
6%synergy
Mana Drain
7.4%inclusion56 decks753 decks
-7%synergy
Dispel
6.9%inclusion52 decks753 decks
3%synergy
Brainstorm
6.6%inclusion50 decks753 decks
-12%synergy
Desperate Ritual
6.6%inclusion4 decks61 decks
4%synergy
Pyretic Ritual
6.6%inclusion4 decks61 decks
4%synergy
Deflecting Swat
6.6%inclusion4 decks61 decks
-10%synergy
Deadly Rollick
6.5%inclusion7 decks107 decks
-7%synergy
Blur
6.2%inclusion47 decks753 decks
5%synergy
Sorceries
Dread Return
48%inclusion51 decks107 decks
43%synergy
Farseek
29%inclusion170 decks577 decks
-6%synergy
Demonic Tutor
27%inclusion29 decks107 decks
8%synergy
Nature's Lore
23%inclusion133 decks577 decks
-8%synergy
Finale of Devastation
22%inclusion126 decks577 decks
14%synergy
Rampant Growth
20%inclusion113 decks577 decks
-14%synergy
Eldritch Evolution
19%inclusion112 decks577 decks
15%synergy
Culling Ritual
19%inclusion8 decks43 decks
8%synergy
Nature's Rhythm
18%inclusion101 decks552 decks
14%synergy
Avatar's Wrath
18%inclusion99 decks562 decks
13%synergy
Three Visits
17%inclusion100 decks577 decks
-7%synergy
Cultivate
16%inclusion93 decks577 decks
-26%synergy
Kodama's Reach
13%inclusion76 decks577 decks
-14%synergy
Damn
13%inclusion14 decks107 decks
-2%synergy
Green Sun's Zenith
12%inclusion69 decks577 decks
7%synergy
Persist
11%inclusion12 decks107 decks
9%synergy
Shared Roots
11%inclusion55 decks516 decks
6%synergy
Splash Portal
8.2%inclusion59 decks721 decks
7%synergy
Neoform
7.6%inclusion44 decks577 decks
4%synergy
Diabolic Tutor
6.5%inclusion7 decks107 decks
1%synergy
Diabolic Intent
6.5%inclusion7 decks107 decks
-1%synergy
Singularity Rupture
6.1%inclusion3 decks49 decks
2%synergy
Stitch Together
5.6%inclusion6 decks107 decks
4%synergy
Another Round
5.2%inclusion39 decks744 decks
4%synergy
Wargate
5.2%inclusion30 decks577 decks
3%synergy
Time Wipe
5.2%inclusion39 decks753 decks
0%synergy
Supreme Verdict
5.2%inclusion39 decks753 decks
-7%synergy
Utility Artifacts
Panharmonicon
50%inclusion375 decks753 decks
46%synergy
Conjurer's Closet
15%inclusion112 decks753 decks
12%synergy
Mirror Box
14%inclusion104 decks753 decks
13%synergy
Wishclaw Talisman
10%inclusion11 decks107 decks
5%synergy
Altar of the Brood
6.6%inclusion50 decks753 decks
6%synergy
Swiftfoot Boots
6.1%inclusion46 decks753 decks
-21%synergy
The One Ring
6.0%inclusion45 decks753 decks
-2%synergy
Enchantments
Wild Growth
34%inclusion198 decks577 decks
24%synergy
Airbender Ascension
29%inclusion166 decks567 decks
26%synergy
Animate Dead
25%inclusion27 decks107 decks
16%synergy
Food Chain
22%inclusion125 decks577 decks
20%synergy
Mystic Remora
21%inclusion161 decks753 decks
5%synergy
Utopia Sprawl
21%inclusion120 decks577 decks
13%synergy
Heartless Summoning
20%inclusion21 decks107 decks
19%synergy
Rhystic Study
18%inclusion135 decks753 decks
-6%synergy
Teleportation Circle
18%inclusion133 decks753 decks
14%synergy
Touch the Spirit Realm
17%inclusion128 decks753 decks
15%synergy
Smothering Tithe
16%inclusion123 decks753 decks
-5%synergy
Elemental Bond
15%inclusion85 decks577 decks
10%synergy
Sneak Attack
13%inclusion8 decks61 decks
11%synergy
Dance of the Dead
11%inclusion12 decks107 decks
10%synergy
Annie Joins Up
10%inclusion4 decks40 decks
-3%synergy
Carpet of Flowers
10%inclusion57 decks577 decks
7%synergy
Impact Tremors
10%inclusion6 decks61 decks
0%synergy
Virtue of Knowledge
10%inclusion72 decks753 decks
8%synergy
Deafening Silence
8.1%inclusion61 decks753 decks
6%synergy
Mirror March
6.6%inclusion4 decks61 decks
6%synergy
Molten Echoes
6.6%inclusion4 decks61 decks
5%synergy
Underworld Breach
6.6%inclusion4 decks61 decks
1%synergy
Sylvan Library
6.2%inclusion36 decks577 decks
-3%synergy
Mortuary
5.6%inclusion6 decks107 decks
5%synergy
Guardian Project
5.0%inclusion29 decks577 decks
-3%synergy
Planeswalkers
Saheeli Rai
6.6%inclusion4 decks61 decks
6%synergy
Utility Lands
Boseiju, Who Endures
36%inclusion205 decks577 decks
17%synergy
Otawara, Soaring City
28%inclusion208 decks753 decks
11%synergy
Reliquary Tower
17%inclusion126 decks753 decks
-13%synergy
City of Traitors
12%inclusion92 decks753 decks
11%synergy
Yavimaya, Cradle of Growth
12%inclusion92 decks753 decks
3%synergy
Bojuka Bog
11%inclusion12 decks107 decks
-18%synergy
Takenuma, Abandoned Mire
10%inclusion11 decks107 decks
2%synergy
Mistrise Village
9.0%inclusion59 decks655 decks
1%synergy
Peat Bog
7.5%inclusion8 decks107 decks
7%synergy
Witch's Cottage
7.5%inclusion8 decks107 decks
4%synergy
Alchemist's Refuge
7.3%inclusion42 decks577 decks
1%synergy
Crystal Vein
6.9%inclusion52 decks753 decks
6%synergy
Urza's Saga
6.4%inclusion48 decks753 decks
-1%synergy
Abandoned Air Temple
5.8%inclusion32 decks549 decks
1%synergy
Shifting Woodland
5.8%inclusion33 decks571 decks
-1%synergy
Mortuary Mire
5.6%inclusion6 decks107 decks
1%synergy
Phyrexian Tower
5.6%inclusion6 decks107 decks
-3%synergy
Cephalid Coliseum
5.6%inclusion42 decks753 decks
2%synergy
Mana Artifacts
Arcane Signet
79%inclusion594 decks753 decks
7%synergy
Sol Ring
78%inclusion587 decks753 decks
-6%synergy
Talisman of Dominance
53%inclusion57 decks107 decks
21%synergy
Talisman of Hierarchy
41%inclusion44 decks107 decks
15%synergy
Fellwar Stone
38%inclusion289 decks753 decks
18%synergy
Talisman of Progress
31%inclusion230 decks753 decks
5%synergy
Dimir Signet
30%inclusion32 decks107 decks
5%synergy
Orzhov Signet
29%inclusion31 decks107 decks
6%synergy
Talisman of Curiosity
28%inclusion164 decks577 decks
16%synergy
Lotus Petal
25%inclusion191 decks753 decks
18%synergy
Talisman of Creativity
25%inclusion15 decks61 decks
-4%synergy
Talisman of Unity
22%inclusion127 decks577 decks
15%synergy
Izzet Signet
20%inclusion12 decks61 decks
-4%synergy
Talisman of Indulgence
18%inclusion8 decks45 decks
-10%synergy
Azorius Signet
16%inclusion123 decks753 decks
-5%synergy
Talisman of Resilience
16%inclusion7 decks43 decks
4%synergy
Talisman of Conviction
13%inclusion8 decks61 decks
-11%synergy
Relic of Legends
12%inclusion88 decks753 decks
9%synergy
Boros Signet
11%inclusion7 decks61 decks
-8%synergy
Mind Stone
8.9%inclusion67 decks753 decks
-6%synergy
Thought Vessel
8.8%inclusion66 decks753 decks
-9%synergy
Relic of Sauron
6.7%inclusion3 decks45 decks
-1%synergy
Cursed Mirror
6.6%inclusion4 decks61 decks
1%synergy
Simic Signet
6.2%inclusion36 decks577 decks
-5%synergy
Charcoal Diamond
5.6%inclusion6 decks107 decks
1%synergy
Lands
Command Tower
92%inclusion693 decks753 decks
18%synergy
Breeding Pool
60%inclusion347 decks577 decks
18%synergy
Exotic Orchard
56%inclusion418 decks753 decks
19%synergy
Temple Garden
54%inclusion314 decks577 decks
15%synergy
Hallowed Fountain
51%inclusion384 decks753 decks
11%synergy
Flooded Strand
48%inclusion362 decks753 decks
37%synergy
Watery Grave
46%inclusion49 decks107 decks
4%synergy
Windswept Heath
43%inclusion323 decks753 decks
32%synergy
Misty Rainforest
42%inclusion318 decks753 decks
31%synergy
Godless Shrine
40%inclusion43 decks107 decks
-1%synergy
Overgrown Tomb
40%inclusion17 decks43 decks
-1%synergy
Yavimaya Coast
37%inclusion212 decks577 decks
10%synergy
Tropical Island
36%inclusion206 decks577 decks
21%synergy
Hinterland Harbor
36%inclusion206 decks577 decks
3%synergy
Glacial Fortress
35%inclusion262 decks753 decks
2%synergy
Savannah
34%inclusion198 decks577 decks
22%synergy
Raffine's Tower
33%inclusion35 decks107 decks
8%synergy
Rejuvenating Springs
32%inclusion186 decks577 decks
6%synergy
Prairie Stream
32%inclusion240 decks753 decks
-1%synergy
Polluted Delta
32%inclusion238 decks753 decks
20%synergy
Badlands
31%inclusion14 decks45 decks
18%synergy
Adarkar Wastes
31%inclusion232 decks753 decks
7%synergy
Bayou
30%inclusion13 decks43 decks
17%synergy
Tundra
30%inclusion227 decks753 decks
16%synergy
Brushland
30%inclusion172 decks577 decks
10%synergy
Spara's Headquarters
30%inclusion171 decks577 decks
2%synergy
Mana Confluence
29%inclusion218 decks753 decks
22%synergy
City of Brass
29%inclusion217 decks753 decks
21%synergy
Sea of Clouds
29%inclusion215 decks753 decks
4%synergy
Scalding Tarn
28%inclusion214 decks753 decks
18%synergy
Arcane Sanctum
28%inclusion30 decks107 decks
0%synergy
Canopy Vista
28%inclusion161 decks577 decks
-8%synergy
Volcanic Island
28%inclusion17 decks61 decks
14%synergy
Steam Vents
28%inclusion17 decks61 decks
-10%synergy
Wooded Foothills
28%inclusion209 decks753 decks
17%synergy
Verdant Catacombs
27%inclusion204 decks753 decks
16%synergy
Cavern of Souls
27%inclusion203 decks753 decks
20%synergy
Sunpetal Grove
26%inclusion151 decks577 decks
-2%synergy
Undercity Sewers
26%inclusion28 decks107 decks
15%synergy
Marsh Flats
26%inclusion195 decks753 decks
15%synergy
Zagoth Triome
26%inclusion11 decks43 decks
-2%synergy
Dreamroot Cascade
25%inclusion146 decks577 decks
4%synergy
Underground Sea
25%inclusion27 decks107 decks
11%synergy
Bountiful Promenade
25%inclusion145 decks577 decks
3%synergy
Sunken Hollow
24%inclusion26 decks107 decks
-9%synergy
Gemstone Caverns
24%inclusion182 decks753 decks
19%synergy
Taiga
22%inclusion9 decks41 decks
9%synergy
Shadowy Backstreet
21%inclusion23 decks107 decks
11%synergy
Scrubland
21%inclusion23 decks107 decks
8%synergy
Arid Mesa
21%inclusion161 decks753 decks
11%synergy