Ravived Lava Flow

(Transforms from Reforested Lava Flow.)
Landfall — Whenever a land enters the
battlefield under your control, Ravived Lava
Flow deals 1 damage to target player or planeswalker. If that land is a Mountain, Ravived
Lava Flow deals 2 damage instead.
Sacrifice a land: You may play an additional land
this turn. Activate only as sorcery and only once
each turn.