Razorfield Ripper

Artifact Creature — Equipment Rhino

Whenever Razorfield Ripper or equipped creature attacks, you get (an energy counter), then it gets +X/+X until end of turn, where X is the amount of you have. Reconfigure—Pay or . (Pay or : Attach to target creature you control; or unattach from a creature. Reconfigure only as a sorcery. While attached, this isn't a creature.)