Urion, Arcbound Masterwork

Modular 5 (This enters the battlefield with five +1/+1 counters on it. When it dies, you may put its +1/+1 counters on target artifact creature.)
Whenever a creature with power or toughness equal to 0 enters the battlefield under your control, put two +1/+1 counters on it.
Artifacts you control with three or more counters on them gain hexproof.