Treasure-Hunters' Bane

When Treasure-Hunters' Bane is turned
face up, counter target activated ability
from an artifact. Treasure-Hunters' Bane
deals 3 damage to that artifact's controller.
Morph {u}{r} (You may cast this card face
down as a 2/2 creature for 3. Turn it face up
any time for its morph cost.)