Koth, Fire of Resistance

+2: Search your library for two basic Mountain cards, reveal them, put them into your hand, then shuffle.
-3: Put a Mountain card from your hand onto the battlefield. Koth deals damage equal to the number of Mountains you control to to target creature.
-7: You get an emblem with “Whenever a Mountain enters the battlefield under your control, this emblem deals 4 damage to any target.”