Cataclysm

Each player chooses from among the permanents they control an artifact, a creature, an enchantment, and a land, then sacrifices the rest.

Foul Imp

Flying
When Foul Imp enters the battlefield, you lose 2 life.

Bellowing Fiend

Flying
Whenever Bellowing Fiend deals damage to a creature, Bellowing Fiend deals 3 damage to that creature’s controller and 3 damage to you.

Benthic Behemoth

Islandwalk (This creature can’t be blocked as long as defending player controls an Island.)