hangarback walker enters the battlefield with x +1/+1 counters on it.
when hangarback walker dies, put a 1/1 colorless thopter artifact creature token with flying onto the battlefield for each +1/+1 counter on hangarback walker.
1, t: put a +1/+1 counter on hangarback walker.
Definitely a chase rare of the set. It commands instant removal and isn't a blank card late game. It's got legs till it got thopters. Thopt thopt thopt!!