Koth, Fire of Resistance (#446) (step-and-compleat-foil) (borderless)
+2: Search your library for a basic Mountain card, reveal it, put it into your hand, then shuffle.
?3: Koth, Fire of Resistance deals damage to target creature equal to the number of Mountains you control.
?7: You get an emblem with "Whenever a Mountain enters the battlefield under your control, this emblem deals 4 damage to any target."