Warper

{x}: Search your library for a creature card with converted mana cost X and biome alignment,
and place it onto the battlefield. That creature
gains haste until end of turn. Shuffle your
library afterwards. (Biome alignment is achieved
when a land you control encompasses all colors of a creature.)
Created by the precursors ages ago, warpers patrol the
seas of 4546B, hunting and killing infected outsiders.