Creature — Giant Shaman 5/5, 5{R/G} (6)
Rare
{T}, Sacrifice a Mountain: Valleymaker deals 3 damage to target creature.
{T}, Sacrifice a Forest: Choose a player. That player adds {G}{G}{G} to his or her mana pool.
Their home uprooted by a giant, the gang of boggarts mourned their old stomping ground.
Illus. Randy Gallegos

10/1/2009: The second ability is a mana ability. It doesn't target a player and it doesn't use the stack. If the player who adds {G}{G}{G} to his or her mana pool can't spend all of it before the phase ends, the remaining mana will leave his or her mana pool at the end of the current step (or phase).
Legal in Vintage (Type 1)
Legal in Legacy (Type 1.5)
Legal in Classic (MTGO)
Legal in Commander
Legal in Modern