Deathtouch
Whenever you activate an ability of an artifact or creature that isn't a mana ability, if one or more permanents were sacrificed to activate it, you may copy that ability. You may choose new targets for the copy. (Sacrificing an artifact for mana to activate an ability doesn't count.)
“Sacrificed to activate it” means that a permanent was sacrificed to pay the ability’s costs. Sacrificing an artifact, such as a Treasure token, to create mana that you used to pay an activation cost doesn’t count.