Sevastopol Drone

First Stike, Hexproof.
Whenever a creature dealt damage by
Sevastopol Drone this turn dies,
Incubate X where X is equal to that creature's toughness. (Create an Incubator token with X
+1/+1 counters on it and "{2}: Transform this
artifact." It transforms into a 0/0 Xenomorph artifact creature.)