Hangarback Walker [The List]

Set: The List Type: Artifact Creature — Construct Rarity: Rare Cost: {X}{X} Hangarback Walker enters with X +1/+1 counters on it.When Hangarback Walker dies, create a 1/1 colorless Thopter artifact creature token with flying for each +1/+1 counter on Hangarback Walker.{1}, {T}: Put a +1/+1 counter on Hangarback Walker.