Experiment One

a Human gets a counter — 326 cards in the game can cause this (Experiment One is one).

1. Cloaked Cadet — When Experiment One gets a counter, Cloaked Cadet draws you 1 card

a creature gets a counter — 2,691 cards in the game can cause this (Experiment One is one).

When Experiment One gets a counter:

1. Hollowmurk Siege — draws you 1 card
2. Ant-Man, Colony Commander — makes a token
3. Earth Kingdom General — gains you that much life
4. Casey Jones, Back Alley Brute — deals that much damage
5. Shalai and Hallar — deals that much damage
6. Danny Pink — draws you 1 card
7. Enduring Scalelord — puts a +1/+1 counter on itself
8. Mikey & Leo, Chaos & Order — draws you 1 card
9. Knight of Wundagore — puts a +1/+1 counter on itself
10. Moss-Pit Skeleton — returns itself from the graveyard

33 other cards care about it too. These are the ones with the most connections.

anything gets a counter — 4,415 cards in the game can cause this (Experiment One is one).

1. All Will Be One — When Experiment One gets a counter, All Will Be One deals that much damage

8 other cards care about it too. These are the ones with the most connections.

a Human enters the battlefield — 4,639 cards in the game can cause this (Experiment One is one).

When Experiment One enters:

1. General Kudro of Drannith — hits a graveyard
2. Heronblade Elite — puts a +1/+1 counter on itself
3. Kyler, Sigardian Emissary — puts a +1/+1 counter on itself
4. Thalia's Lieutenant — puts a +1/+1 counter on itself
5. Champion of the Parish — puts a +1/+1 counter on itself
6. Captain of the Mists — untaps itself
7. Erkenbrand, Lord of Westfold — gives +1/+0
8. Beregond of the Guard — gives +1/+1
9. Théoden, King of Rohan — grants double strike
10. Lossarnach Captain — taps a creature an opponent controls

2 other cards care about it too. These are the ones with the most connections.

anything attacks — 17,934 cards in the game can cause this (Experiment One is one).

When Experiment One attacks:

1. Far Fortune, End Boss — deals 1 damage
2. Temmet, Naktamun's Will — draws you 1 card
3. Grim Javelineer — gives +1/+0
4. Invisible Woman — triggers
5. Caesar, Legion's Emperor — sacrifices a creature
6. Guide of Souls — triggers
7. Campsite Cuisine — sacrifices a Food
8. Gossip's Talent — triggers
9. Banon, the Returners' Leader — draws and discards
10. Toph, Earthbending Master — puts a counter on a permanent

113 other cards care about it too. These are the ones with the most connections.

a creature attacks — 17,934 cards in the game can cause this (Experiment One is one).

When Experiment One attacks:

1. Adaptive Omnitool — searches a library
2. Anthem of Rakdos — gives +2/+0
3. Kindred Discovery — draws you 1 card
4. Invasion of New Capenna // Holy Frazzle-Cannon — puts counters on a permanent
5. Chorale of the Void — brings a card back
6. Anim Pakal, Thousandth Moon — puts a +1/+1 counter on itself
7. Saw — sacrifices a creature
8. Gisa's Favorite Shovel — makes an opponent sacrifice a creature
9. Ultima Weapon — kills a creature an opponent controls
10. Total War — kills a creature

181 other cards care about it too. These are the ones with the most connections.

a creature blocks — 17,934 cards in the game can cause this (Experiment One is one).

When Experiment One blocks:

1. Mage Hunters' Onslaught — makes a player lose 1 life
2. Carnage Gladiator — makes a player lose 1 life
3. Barrow-Blade — strips abilities
4. Tide of War — sacrifices a creature
5. Dead-Iron Sledge — kills a creature
6. Dwindle — kills a creature
7. Shield of the Righteous — triggers

21 other cards care about it too. These are the ones with the most connections.

a nontoken creature attacks — 17,934 cards in the game can cause this (Experiment One is one).

When Experiment One attacks:

1. Mardu Ascendancy — makes a token
2. Basri Ket — makes a token
3. Militia's Pride — makes a token

a creature it boosts — 19,392 cards in the game can cause this.

1. Fecund Greenshell — Fecund Greenshell gives Experiment One bigger stats
2. Leyline of Vitality — Leyline of Vitality gives Experiment One bigger stats
3. Sylvan Anthem — Sylvan Anthem gives Experiment One bigger stats
4. Vanquisher's Banner — Vanquisher's Banner gives Experiment One bigger stats
5. Beastmaster Ascension — Beastmaster Ascension gives Experiment One bigger stats
6. Comforting Counsel — Comforting Counsel gives Experiment One bigger stats
7. Vibrating Sphere — Vibrating Sphere gives Experiment One bigger stats
8. Towering Gibbon — Towering Gibbon gives Experiment One bigger stats
9. Chronicle of Victory — Chronicle of Victory gives Experiment One bigger stats
10. Door of Destinies — Door of Destinies gives Experiment One bigger stats

19,382 other cards cause it too. These are the ones with the most connections.

a creature it grants abilities to — 19,392 cards in the game can cause this.

1. Garruk's Uprising — Garruk's Uprising gives Experiment One trample
2. Spike-Tailed Ceratops — Spike-Tailed Ceratops gives Experiment One an extra ability
3. Bellowing Tanglewurm — Bellowing Tanglewurm gives Experiment One intimidate
4. Brawn — Brawn gives Experiment One trample
5. Echo Circlet — Echo Circlet gives Experiment One an extra ability
6. Vanguard's Shield — Vanguard's Shield gives Experiment One an extra ability
7. Akroma's Memorial — Akroma's Memorial gives Experiment One first strike, flying, haste, protection, trample and vigilance
8. Nylea, God of the Hunt — Nylea, God of the Hunt gives Experiment One trample
9. Elven Chorus — Elven Chorus gives Experiment One an extra ability
10. Dormant Grove // Gnarled Grovestrider — Dormant Grove // Gnarled Grovestrider gives Experiment One vigilance

19,382 other cards cause it too. These are the ones with the most connections.

a creature it applies untap to — 19,392 cards in the game can cause this.

1. Quest for Renewal — Quest for Renewal gives Experiment One an extra untap

19,391 other cards cause it too. These are the ones with the most connections.

a creature it applies speed increase to — 19,392 cards in the game can cause this.

1. Thousand-Year Elixir — Thousand-Year Elixir gives Experiment One haste
2. Vivien, Champion of the Wilds — Vivien, Champion of the Wilds gives Experiment One haste

19,390 other cards cause it too. These are the ones with the most connections.

a creature it applies extra combat to — 19,392 cards in the game can cause this.

1. Swinging Ship — Swinging Ship gives Experiment One its extra combat

19,391 other cards cause it too. These are the ones with the most connections.

a creature it grants types to — 19,392 cards in the game can cause this.

1. Amorphous Axe — Amorphous Axe gives Experiment One an extra creature type
2. Runed Stalactite — Runed Stalactite gives Experiment One an extra creature type

19,390 other cards cause it too. These are the ones with the most connections.

a creature enters the battlefield — 19,800 cards in the game can cause this (Experiment One is one).

When Experiment One enters:

1. Slash, Reptile Rampager — deals 2 damage
2. Ray Fillet, Wave Warrior — puts a counter on itself
3. Bess, Soul Nourisher — puts a +1/+1 counter on itself
4. The Neutrinos — gets +1/+0
5. Wingnut, Bat on the Belfry — grants flying, haste and menace
6. Aetherstorm Roc — puts a counter on a permanent you control
7. Raphael, Most Attitude — exiles a card from your library

302 other cards care about it too. These are the ones with the most connections.

anything enters the battlefield — 26,499 cards in the game can cause this (Experiment One is one).

1. Prowl, Stoic Strategist // Prowl, Pursuit Vehicle — When Experiment One enters, Prowl, Stoic Strategist // Prowl, Pursuit Vehicle puts a +1/+1 counter on itself

44 other cards care about it too. These are the ones with the most connections.