Enchantment, 1BB (3)
Uncommon (U3)
At the beginning of your upkeep, sacrifice Tourach's Chant unless you pay {B}.
Whenever a player puts a Forest onto the battlefield, Tourach's Chant deals 3 damage to that player unless he or she puts a -1/-1 counter on a creature he or she controls.
Illus. Richard Kane Ferguson

10/4/2004: Only checks the type of the land as it is put onto the battlefield. If the land gets changed after it enters the battlefield (even by a continuous effect), the Chant causes no additional effect.
Legal in Vintage (Type 1)
Legal in Legacy (Type 1.5)
Legal in Commander