Artifact Creature — Myr 1/1, 3 (3)
Common
{T}: Target land becomes an artifact in addition to its other types until end of turn.
One thing the myr can't do is enjoy the scenery.
Illus. Greg Staples

12/1/2004: The land keeps all its other types, subtypes, and supertypes: If it was a basic land, it's still basic. If it was a Forest, it's still a Forest.
Legal in Vintage (Type 1)
Legal in Legacy (Type 1.5)
Legal in Classic (MTGO)
Legal in Commander
Legal in Modern