Dack Faden of Drakeston

0: Destroy Target Artifact. Dack Faden of Drakeston deals 2 damage to any target.
-4: Target player sacrifices four creatures and loses 4 life. Activate this ability only if Dack Faden of Drakeston is Black.
-4: You draw cards equal to two plus the number of Artifacts in all graveyards. Activate this ability only if Dack Faden of Drakeston is Blue.