Koth of the Hammer
Duel Decks: Venser vs. Koth — Mythic
+1: Untap target Mountain. It becomes a 4/4 red Elemental creature until end of turn. It's still a land.
-2: Add to your mana pool for each Mountain you control.
-5: You get an emblem with "Mountains you control have : This land deals 1 damage to target creature or player.'"