Oathsworn Protector

Flash
As Oathsworn Protector enters the battlefield,
you may exile target blocking creature you
control. If you do, Oathsworn Protector enters blocking what that creature was blocking. Return
the exiled creature to the battlefield under its
owner's control at the beginning of the next end
step. (If the exiled creature was blocking multiple creatures you choose one for this creature to be
blocking, the rest become unblocked.)