Coin of Mastery

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

1. Scurry Oak — When Scurry Oak gets a counter thanks to Coin of Mastery, it makes a token
2. Fathom Mage — When Fathom Mage gets a counter thanks to Coin of Mastery, it draws you 1 card
3. Hollowmurk Siege — When a creature gets a counter thanks to Coin of Mastery, Hollowmurk Siege draws you 1 card
4. Ant-Man, Colony Commander — When a creature gets a counter thanks to Coin of Mastery, Ant-Man, Colony Commander makes a token
5. Earth Kingdom General — When a creature gets a counter thanks to Coin of Mastery, Earth Kingdom General gains you that much life
6. Casey Jones, Back Alley Brute — When a creature gets a counter thanks to Coin of Mastery, Casey Jones, Back Alley Brute deals that much damage
7. Shalai and Hallar — When a creature gets a counter thanks to Coin of Mastery, Shalai and Hallar deals that much damage
8. Danny Pink — When a creature gets a counter thanks to Coin of Mastery, Danny Pink draws you 1 card
9. Enduring Scalelord — When a creature gets a counter thanks to Coin of Mastery, Enduring Scalelord puts a +1/+1 counter on itself
10. Mikey & Leo, Chaos & Order — When a creature gets a counter thanks to Coin of Mastery, Mikey & Leo, Chaos & Order draws you 1 card

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

an artifact is cast — 3,683 cards in the game can cause this (Coin of Mastery is one).

When Coin of Mastery is cast:

1. Mendicant Core, Guidelight — copies a spell
2. Sai, Master Thopterist — makes a token
3. Ravenous Robots — makes a token
4. Pinnacle Emissary — makes a token
5. Mirrodin Besieged — makes a token
6. Poetic Ingenuity — makes a token
7. Digsite Engineer — makes a token
8. Myrsmith — makes a token
9. Riddlesmith — draws you 1 card
10. Dr. Madison Li — puts a counter on a permanent you control

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

a token enters the battlefield — 3,710 cards in the game can cause this (Coin of Mastery is one).

When a Treasure enters thanks to Coin of Mastery:

1. Baron Bertram Graywater — makes a token
2. Marneus Calgar — draws you 1 card
3. Belladonna Took — gains you 1 life
4. Kambal, Profiteering Mayor — makes each opponent lose 1 life
5. Lucy MacLean, Positively Armed — makes a token
6. Mister Fantastic, Reed Richards — draws you 1 card
7. Cloakwood Swarmkeeper — puts a +1/+1 counter on itself
8. Woodland Champion — puts that many +1/+1 counters on itself
9. Leonardo, the Balance — puts a counter on a creature
10. Spiritcall Enthusiast // Scrollboost — becomes prepared

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

a token is created — 3,711 cards in the game can cause this (Coin of Mastery is one).

When Coin of Mastery makes a Treasure token:

1. Akim, the Soaring Wind — makes a token
2. Idol of Oblivion — draws you 1 card
3. Rosie Cotton of South Lane — puts a counter on a permanent
4. Mirkwood Bats — makes each opponent lose 1 life

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

a nontoken artifact enters the battlefield — 3,768 cards in the game can cause this (Coin of Mastery is one).

When Coin of Mastery enters:

1. Ultron, Artificial Malevolence — makes a token
2. The Prydwen, Steel Flagship — makes a token
3. Conquest Mission — puts a quest counter on itself
4. Surge Conductor — proliferates
5. Replication Specialist — makes a token
6. Weapons Manufacturing — makes a token
7. Mirrorworks — makes a token

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

1. All Will Be One — When a creature gets a counter thanks to Coin of Mastery, All Will Be One deals that much damage
2. Berta, Wise Extrapolator — When Berta, Wise Extrapolator gets a counter thanks to Coin of Mastery, it adds 1 mana
3. Aragorn, Company Leader — When Aragorn, Company Leader gets a counter thanks to Coin of Mastery, it puts counters on itself
4. Lonis, Genetics Expert — When Lonis, Genetics Expert gets a counter thanks to Coin of Mastery, it triggers
5. Blaster, Combat DJ // Blaster, Morale Booster — When Blaster, Combat DJ // Blaster, Morale Booster gets a counter thanks to Coin of Mastery, it triggers

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

an artifact enters the battlefield — 4,643 cards in the game can cause this (Coin of Mastery is one).

When a Treasure enters thanks to Coin of Mastery:

1. Transplant Theorist — draws you 1 card
2. Elvish Archivist — puts 2 +1/+1 counters on itself
3. Golbez, Crystal Collector — surveils
4. Sludge Strider — makes a player lose 1 life
5. Underhanded Designs — makes each opponent lose 1 life
6. Mechan Assembler — makes a token
7. Glassdust Hulk — gets +1/+1
8. Rook Turret — draws you 1 card
9. Hedron Detonator — deals 1 damage
10. Pactdoll Terror — makes each opponent lose 1 life

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

a creature it applies enters with counters to — 19,392 cards in the game can cause this (Coin of Mastery is one).

1. Pollywog Prodigy — Coin of Mastery gives Pollywog Prodigy counters as it enters

19,391 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 (Coin of Mastery is one).

When a Treasure enters thanks to Coin of Mastery:

1. HYDRA Assault Robot — deals 1 damage
2. Era of Innovation — puts a counter on a permanent you control

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

anything is cast — 31,128 cards in the game can cause this (Coin of Mastery is one).

1. Sokka, Bold Boomeranger — When Coin of Mastery is cast, Sokka, Bold Boomeranger puts a +1/+1 counter on itself

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