Canaan, The War Engine

+1: Make a copy of target artifact, "This will not untap during it's controllers untap step" "Untap this when an artifact enters the battlefield"
-4: Copy target artifact from a graveyard and put it onto the battlefield tapped with, "Anytime this card is tapped, target player takes 1 damage"
-10: Take an extra turn at the end of the next turn.