Starting intensity 1

Draw a number of cards equal to this spell's intensity.

All Chorus cards you own intensify by 1.

At the beginning of combat on your turn, choose target creature card in your graveyard. Conjure a duplicate of it into your graveyard.

Descend 8 — Exile a permanent card from your graveyard: You may play it. Activate only as a sorcery and only if there are eight or more permanent cards in your graveyard.

Trample

When Caldera Breaker enters, 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.

Starting intensity 2

Conjure X cards named Colossal Dreadmaw onto the battlefield, where X is this spell's intensity.

All Chorus cards you own intensify by 1.