Valleymaker is a rare Creature — Giant Shaman card from Shadowmoor (SHM), collector number 221. Current market price: $0.21 (foil $0.99), TCGplayer market prices via Scryfall.
{T}, Sacrifice a Mountain: This creature deals 3 damage to target creature. {T}, Sacrifice a Forest: Choose a player. That player adds {G}{G}{G}.