Amoeboid Changeling + Spirit Mirror + Thornbite Staff

Amoeboid Changeling
Spirit Mirror
Thornbite Staff

Requires
Amoeboid Changeling must be on the battlefield. Spirit Mirror must be on the battlefield. Thornbite Staff must be on the battlefield. Thornbite Staff attached to Amoeboid Changeling. Amoeboid Changeling does not have summoning sickness.
Steps
  1. Activate Amoeboid Changeling's first ability by tapping it, causing any creature an opponent controls to gain all creature types until end of turn.
  2. Activate Spirit Mirror by paying 0, destroying the opponent's creature.
  3. The creature dies, triggering Amoeboid Changeling, untapping Amoeboid Changeling.
  4. Repeat.
  5. You may also repeat this loop whenever a creature enters the battlefield under an opponent's control.
Results
Destroy all creatures opponents control. Destroy all creatures that enter the battlefield under an opponent's control.

The Ur-Dragon
0.01% of 27263 decks 3 decks
Morophon, the Boundless
0.03% of 9863 decks 3 decks
Sliver Overlord
0.05% of 6449 decks 3 decks
Rasputin, the Oneiromancer
0.29% of 339 decks 1 decks
Dynaheir, Invoker Adept
0.07% of 1378 decks 1 decks
Queza, Augur of Agonies
0.02% of 6366 decks 1 decks
Tom Bombadil
0.01% of 13583 decks 1 decks
Heliod, the Radiant Dawn
0.02% of 4056 decks 1 decks
Rukarumel, Biologist
0.04% of 2789 decks 1 decks
High Synergy Cards
Cloudshredder Sliver
75% of 12 decks +72% synergy
Manaweft Sliver
64% of 11 decks +62% synergy
Gemhide Sliver
64% of 11 decks +62% synergy
Realmwalker
64% of 11 decks +58% synergy
Hatchery Sliver
57% of 7 decks +56% synergy
Magda, Brazen Outlaw
58% of 12 decks +56% synergy
Masked Vandal
55% of 11 decks +52% synergy
Reaper King
45% of 11 decks +44% synergy
Maskwood Nexus
47% of 15 decks +44% synergy
Mirror Entity
47% of 15 decks +42% synergy
Top Cards
Farseek
64% of 11 decks +29% synergy
Kodama's Reach
55% of 11 decks +23% synergy
Counterspell
47% of 15 decks +4% synergy
Graveshifter
42% of 12 decks +40% synergy
Taurean Mauler
42% of 12 decks +38% synergy
Changeling Outcast
42% of 12 decks +37% synergy
Shapesharer
40% of 15 decks +40% synergy
Arcane Adaptation
40% of 15 decks +39% synergy
Unsettled Mariner
40% of 15 decks +38% synergy
Reflections of Littjara
40% of 15 decks +35% synergy
Creatures
Voja, Jaws of the Conclave
75% of 4 decks +74% synergy
Harabaz Druid
36% of 11 decks +36% synergy
Predatory Sliver
36% of 11 decks +36% synergy
Harmonic Sliver
36% of 11 decks +34% synergy
Risen Reef
36% of 11 decks +33% synergy
Spiteful Sliver
33% of 12 decks +32% synergy
Bloodline Pretender
33% of 15 decks +32% synergy
Tempered Sliver
27% of 11 decks +27% synergy
Rin and Seri, Inseparable
27% of 11 decks +27% synergy
Root Sliver
27% of 11 decks +27% synergy
Muscle Sliver
27% of 11 decks +27% synergy
Firewake Sliver
27% of 11 decks +27% synergy
Venom Sliver
27% of 11 decks +26% synergy
Herald of Hoofbeats
27% of 11 decks +26% synergy
The First Sliver
27% of 11 decks +24% synergy
Sliver Legion
27% of 11 decks +21% synergy
Miirym, Sentinel Wyrm
27% of 11 decks +21% synergy
Sliver Hivelord
27% of 11 decks +20% synergy
Morophon, the Boundless
27% of 11 decks +14% synergy
Sinew Sliver
27% of 15 decks +26% synergy
Sentinel Sliver
27% of 15 decks +26% synergy
Universal Automaton
27% of 15 decks +26% synergy
Knight Exemplar
27% of 15 decks +25% synergy
Skeletal Changeling
25% of 12 decks +25% synergy
Heart Sliver
25% of 12 decks +24% synergy
Necrotic Sliver
25% of 12 decks +23% synergy
Imagecrafter
20% of 15 decks +20% synergy
Avian Changeling
20% of 15 decks +20% synergy
Impostor of the Sixth Pride
20% of 15 decks +20% synergy
Synapse Sliver
20% of 15 decks +19% synergy
Diffusion Sliver
20% of 15 decks +19% synergy
Shifting Sliver
20% of 15 decks +19% synergy
Irregular Cohort
20% of 15 decks +19% synergy
Bonescythe Sliver
20% of 15 decks +19% synergy
Mothdust Changeling
20% of 15 decks +19% synergy
Instants
Enlightened Tutor
33% of 15 decks +16% synergy
Swords to Plowshares
27% of 15 decks -36% synergy
Vampiric Tutor
25% of 12 decks +7% synergy
Shields of Velis Vel
20% of 15 decks +20% synergy
Teferi's Protection
20% of 15 decks -0% synergy
Negate
20% of 15 decks -3% synergy
Cyclonic Rift
20% of 15 decks -8% synergy
Path to Exile
20% of 15 decks -25% synergy
Sorceries
Exterminate!
50% of 6 decks +50% synergy
Cultivate
36% of 11 decks -10% synergy
Whelming Wave
33% of 15 decks +31% synergy
Peer Pressure
27% of 15 decks +26% synergy
Distant Melody
27% of 15 decks +22% synergy
Kindred Dominance
25% of 12 decks +21% synergy
Blasphemous Act
25% of 12 decks -9% synergy
Utility Artifacts
Birthing Boughs
33% of 15 decks +33% synergy
Vanquisher's Banner
20% of 15 decks +16% synergy
Herald's Horn
20% of 15 decks +14% synergy
Swiftfoot Boots
20% of 15 decks -8% synergy
Enchantments
Kindred Discovery
40% of 15 decks +33% synergy
Liliana's Contract
33% of 12 decks +32% synergy
Black Market Connections
33% of 12 decks +22% synergy
Crucible of Fire
25% of 12 decks +24% synergy
Rhystic Study
20% of 15 decks -8% synergy
Utility Lands
Swarmyard
33% of 15 decks +32% synergy
Reliquary Tower
33% of 15 decks +4% synergy
Yavimaya, Cradle of Growth
20% of 15 decks +11% synergy
Mana Artifacts
Arcane Signet
93% of 15 decks +21% synergy
Sol Ring
93% of 15 decks +9% synergy
Chromatic Lantern
47% of 15 decks +37% synergy
Commander's Sphere
20% of 15 decks +5% synergy
Azorius Signet
20% of 15 decks -6% synergy
Lands
Command Tower
100% of 15 decks +26% synergy
Path of Ancestry
67% of 15 decks +46% synergy
Exotic Orchard
60% of 15 decks +24% synergy
The World Tree
55% of 11 decks +21% synergy
Secluded Courtyard
40% of 15 decks +35% synergy
Zagoth Triome
36% of 11 decks +6% synergy
Indatha Triome
36% of 11 decks +5% synergy
Ketria Triome
36% of 11 decks +4% synergy
Unclaimed Territory
33% of 15 decks +28% synergy
Cavern of Souls
33% of 15 decks +27% synergy
Flooded Strand
33% of 15 decks +23% synergy
Spectator Seating
33% of 12 decks +8% synergy
Sea of Clouds
33% of 15 decks +7% synergy
Training Center
33% of 12 decks +6% synergy
Prairie Stream
33% of 15 decks -0% synergy
Auntie's Hovel
27% of 11 decks +27% synergy
Gilt-Leaf Palace
27% of 11 decks +26% synergy
Bountiful Promenade
27% of 11 decks +3% synergy
Spire Garden
27% of 11 decks +3% synergy
Undergrowth Stadium
27% of 11 decks +1% synergy
Luxury Suite
27% of 11 decks +1% synergy
Rejuvenating Springs
27% of 11 decks -1% synergy
Reflecting Pool
27% of 15 decks +21% synergy
Evolving Wilds
27% of 15 decks +6% synergy
Vault of Champions
25% of 12 decks -1% synergy
Morphic Pool
25% of 12 decks -1% synergy
Raugrin Triome
25% of 12 decks -2% synergy
Wanderwine Hub
20% of 15 decks +20% synergy
Sliver Hive
20% of 15 decks +20% synergy
Haven of the Spirit Dragon
20% of 15 decks +19% synergy
Nimbus Maze
20% of 15 decks +15% synergy
Fabled Passage
20% of 15 decks +11% synergy
Arid Mesa
20% of 15 decks +9% synergy
Polluted Delta
20% of 15 decks +9% synergy
Marsh Flats
20% of 15 decks +9% synergy
Azorius Chancery
20% of 15 decks +5% synergy
Terramorphic Expanse
20% of 15 decks +4% synergy
Deserted Beach
20% of 15 decks +4% synergy
Glacial Fortress
20% of 15 decks -5% synergy
Hallowed Fountain
20% of 15 decks -21% synergy