Card

Koth, Fire of Resistance

Phyrexia: All Will Be One Art Series

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Koth, Fire of Resistance Emblem

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."

Phyrexia: All Will Be One Tokens

Emblem

Whenever a Mountain enters the battlefield under your control, this emblem deals 4 damage to any target.