Land — Forest ({T}: Add {G} to your mana pool.)
Rare
As Murmuring Bosk enters the battlefield, you may reveal a Treefolk card from your hand. If you don't, Murmuring Bosk enters the battlefield tapped.
{T}: Add {W} or {B} to your mana pool. Murmuring Bosk deals 1 damage to you.
Illus. John Avon

4/1/2008: Murmuring Bosk is a Forest, but it isn't a basic land. Things that affect basic lands don't affect it. Things that affect basic land types do. For example, you can't find Murmuring Bosk with Fertilid's ability ("searches his or her library for a basic land card"), but you can find Murmuring Bosk with Everbark Shaman's ability ("search your library for two Forest cards").
Legal in Vintage (Type 1)
Legal in Legacy (Type 1.5)
Legal in Classic (MTGO)
Legal in Commander
Legal in Modern