Koth, Unchained

+2: Search your library for a mountain, reveal it, and put it onto the battlefield untapped. Then Koth deals 3 damage to target creature or player.
-3: Until end of turn, up to three target creatures can't block, and up to three target creatures gain +2/+0 and first-strike.
-13: You get an emblem with: "Whenever a mountain enters the battlefield under your control, it deals 3 damage to target creature and target player".