Tripartite Pact

At the beginning of combat on your turn, you
may sacrifice a creature. If you do, target
opponent discards a card, then create a 3/3
battleship artifact creature token with crew 2
and "When this creature deals combat damage
to a player, draw a card, then discard a card."
When this card is put into a graveyard,
return target creature from your graveyard
to your hand.