Etho, Lavacaster

Ninjutsu {1}{u}{b} ({1}{u}{b}, Return an unblocked attacker you control to hand: Put this card onto
the battlefield from your hand tapped and
attacking.)
When Etho, Lavacaster enters the battlefield,
create a colorless artifact token named
"Enderporter" with "{t}, sacrifice this artifact:
return target attacking creature you control to its
owner's hand."