+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.”

+1: Untap target Mountain. It becomes a 4/4 red Elemental creature until end of turn. It’s still a land.

−2: Add {R} for each Mountain you control.

−5: You get an emblem with “Mountains you control have ‘{T}: This land deals 1 damage to any target.’”

+2: Create a Food token. (It’s an artifact with “{2}, {T}, Sacrifice this artifact: You gain 3 life.”)

+1: Target artifact or creature loses all abilities and becomes a green Elk creature with base power and toughness 3/3.

−5: Exchange control of target artifact or creature you control and target creature an opponent controls with power 3 or less.