Rokulos, Grixis Torrent

Flying, Deathtouch, Unleash
When you cast Rokulos, deal 3 damage to target creature or planeswalker and return target instant or sorcery card from your graveyard to your hand.
When Rokulos dies, Surveil 4
Overload - {4}{u}{b}{r}
(Overload applies to this card's cast trigger)