Cloudstone Curio

put a battle onto the battlefield — 81 cards in the game can cause this.

1. Eldrazi Confluence — When a creature enters thanks to Eldrazi Confluence, Cloudstone Curio triggers
2. Invasion of Ravnica // Guildpact Paragon — When Invasion of Ravnica // Guildpact Paragon enters, Cloudstone Curio triggers

79 other cards cause it too. These are the ones with the most connections.

a nontoken permanent leaves the battlefield — 313 cards in the game can cause this (Cloudstone Curio is one).

1. Genku, Future Shaper — When a permanent leaves the battlefield thanks to Cloudstone Curio, Genku, Future Shaper makes a token

a permanent leaves the battlefield — 315 cards in the game can cause this (Cloudstone Curio is one).

When a permanent leaves the battlefield thanks to Cloudstone Curio:

1. Super Shredder — puts a +1/+1 counter on itself
2. Nefarious Imp — scries

put a planeswalker onto the battlefield — 366 cards in the game can cause this.

1. Tezzeret, Cruel Captain — When Tezzeret, Cruel Captain enters, Cloudstone Curio triggers
2. Karn, Scion of Urza — When Karn, Scion of Urza enters, Cloudstone Curio triggers
3. Ugin, the Ineffable — When a Spirit enters thanks to Ugin, the Ineffable, Cloudstone Curio triggers
4. Ugin, Eye of the Storms — When Ugin, Eye of the Storms enters, Cloudstone Curio triggers
5. Ugin, the Spirit Dragon — When a permanent enters thanks to Ugin, the Spirit Dragon, Cloudstone Curio triggers
6. Karn, Living Legacy — When Karn, Living Legacy enters, Cloudstone Curio triggers
7. Karn Liberated — When Karn Liberated enters, Cloudstone Curio triggers
8. Karn, the Great Creator — When Karn, the Great Creator enters, Cloudstone Curio triggers

358 other cards cause it too. These are the ones with the most connections.

put a land onto the battlefield — 1,560 cards in the game can cause this.

1. Staff of Titania — When a Forest or Dryad enters thanks to Staff of Titania, Cloudstone Curio triggers
2. Castle Doom — When Castle Doom enters, Cloudstone Curio triggers
3. Gerrard's Hourglass Pendant — When a creature enters thanks to Gerrard's Hourglass Pendant, Cloudstone Curio triggers
4. Field of the Dead — When a Zombie enters thanks to Field of the Dead, Cloudstone Curio triggers
5. Scaretiller — When a land enters thanks to Scaretiller, Cloudstone Curio triggers
6. Foundry of the Consuls — When Foundry of the Consuls enters, Cloudstone Curio triggers
7. Gargoyle Castle — When Gargoyle Castle enters, Cloudstone Curio triggers
8. Solemn Simulacrum — When a land enters thanks to Solemn Simulacrum, Cloudstone Curio triggers
9. H.E.R.B.I.E. Scout Unit — When a land enters thanks to H.E.R.B.I.E. Scout Unit, Cloudstone Curio triggers
10. PuPu UFO — When a land enters thanks to PuPu UFO, Cloudstone Curio triggers

1,550 other cards cause it too. These are the ones with the most connections.

an artifact is cast — 3,683 cards in the game can cause this (Cloudstone Curio is one).

When Cloudstone Curio 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.

put an enchantment onto the battlefield — 3,743 cards in the game can cause this.

1. Glimmerlight — When a Glimmer enters thanks to Glimmerlight, Cloudstone Curio triggers
2. Faceless One — When Faceless One enters, Cloudstone Curio triggers

3,741 other cards cause 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 (Cloudstone Curio is one).

When Cloudstone Curio 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

an artifact it grants abilities to — 4,531 cards in the game can cause this.

1. Darksteel Forge — Darksteel Forge gives Cloudstone Curio indestructible

4,530 other cards cause it too. These are the ones with the most connections.

an artifact it applies untap to — 4,531 cards in the game can cause this.

1. Unwinding Clock — Unwinding Clock gives Cloudstone Curio an extra untap

4,530 other cards cause it too. These are the ones with the most connections.

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

When Cloudstone Curio enters:

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

55 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 (Cloudstone Curio is one).

When Cloudstone Curio enters:

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

38 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 (Cloudstone Curio is one).

When Cloudstone Curio is cast:

1. Sokka, Bold Boomeranger — puts a +1/+1 counter on itself
2. Saheeli, Radiant Creator — puts a counter on a permanent you control

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