If you cast 'Come Back Wrong' off of resolving The Infamous Cruelclaw's 'combat damage to a player' trigger, when you discard a creature card as the alternative casting cost to pay for Come Back Wrong, the discarded creature card is also returned to the battlefield as well as the creature targeted by Come Back Wrong as the spell resolves. I don't know if this is a bug or just how the spell resolves when the casting cost includes discarding a card