Anu, Beacon of the Blue Moon

Equip {2}{w}{w}{u}{w/u}
When equipped creature attacks, create a token
that is a copy of that creature except it is not
legendary and it is tapped and attacking. If you
do, you may prevent all damage that is dealt to
the equipped creature. If you do, deal that
much damage to any token created by this effect.
Destroy the token at the end of the battle phase.