Grid

Undying (When this creature dies, if it had no
+1/+1 counters on it, return it to the battlefield
under its owner's control with a +1/+1 counter on it.)
When Grid dies, Incubate 2. (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.)