Combos Browse all Suggest
Legality
| Format | Legality |
| Alchemy | Legal |
| Archenemy | Legal |
| Arena | Legal |
| Casual | Legal |
| Commander: Rule 0 | Legal |
| Custom | Legal |
| Freeform | Legal |
| Gladiator | Legal |
| Historic | Legal |
| Historic Brawl | Legal |
| Limited | Legal |
| Planar Constructed | Legal |
| Planechase | Legal |
| Quest Magic | Legal |
| Standard Brawl | Legal |
| Vanguard | Legal |
Caldera Breaker
Artifact Creature — Golem
Trample
When Caldera Breaker enters the battlefield, exile all Mountain cards from your library. When you do, Caldera Breaker deals that much damage to target creature or planeswalker an opponent controls.
When Caldera Breaker dies, put all cards exiled with it onto the battlefield under their owner's control. Conjure four cards named Volcanic Geyser into your library, then shuffle your library. (Generate a copy of the card that is not a token.)