Joven and Chandler (MBC-024) - Mystery Booster: Commander Edition Foil

Whenever an artifact is put into a graveyard from the battlefield, put a number of +1/+1 counters equal to that artifact's mana value on Joven and Chandler.

RRR, T: Gain control of target artifact until end of turn. Untap it. It gains haste until end of turn.