Artifacts you control are Clues in addition to their other types and have "{2}, Sacrifice this artifact: Draw a card." Whenever you sacrifice a Clue, target creature can't be blocked this turn.
Near Mint - $0.50
Lightly Played - $0.40
Played - $0.30
Heavily Played - $0.30
Damaged - $0.30
Near Mint Non-English - $0.50
Lightly Played Non-English - $0.40
Played Non-English - $0.30
Heavily Played Non-English - $0.30
Damaged Non-English - $0.30