Terios, Spellball Player

Flash, Haste
When Terios comes into play, return target
creature from your graveyard to the battlefield.
{r},sacrifice a creature: Terios gains +6/+0 and
Trample until the end of turn
When Terios goes to the graveyard from the battlefield, you can exile target creature from
your graveyard. If so, return Terios to the battlefield.