Naga Stone Master

Mountainwalk
Whenever a Mountain or Raging Ravine enters
the battlefield under your control Naga Stone
Master gets +1/+0 and Reach until end of turn.
Whenever you sacrifice a Gem, Gemstone, Gold,
or Treasure token add an additional {r} or {g} to
your mana pool and do 1 damage to any one other
target creature or Planeswalker.