Meddling Mirrorshard

Whenever Meddling Mirrorshard or equipped
creature attacks, you may have that creature become
a copy of another target creature until end of turn,
except its 2/2. If Meddling Mirrorshard is attached
to a creature, instead its power and toughness are
equal to that creature's power and toughness.

Reconfigure {1}{u}{u} ({1}{u}{u}: Attach to target
creature you control; or unattach from a creature.
Reconfigure only as a sorcery. While attached, this
isn't a creature.)