Lost Saber of Luke

When Lost Lightsaber of Luke enters, attach it to
target Jedi you control. Create a Map token.
Equipped creature has “Whenever this creature
attacks with a creature of greater power, put a +1/+1 counter on this creature” and “Sacrifice a Map token: Attacking creatures you control get +X/+0 until end
of turn, where X is the number of counters on
equipped creature.”

Equip {3}