Oceiros, Consumed King

Each instant and sorcery spell in your graveyard has flashback. The flashback cost is equal to that card's
mana cost.
{3}{b}{b}, Exile a creature card from your graveyard: Monstrosity 3 (If this permanent isn't monstrous, put
three +1/+1 counters on it and it becomes monstrous.)
As long as Oceiros, Consumed King is monstrous,
it has trample, menace and toxic 1.