Koth, Fire of Resistance (Phyrexia: All Will Be One)

Legendary Planeswalker — Koth - +2: Search your library for a basic Mountain card, reveal it, put it into your hand, then shuffle.
?3: Koth deals damage to target creature equal to the number of Mountains you control.
?7: You get an emblem with "Whenever a Mountain you control enters, this emblem deals 4 damage to any target."