+Spoiler (5)
Trample
Mark of Chaos Ascendant — During your turn, spells you cast from your hand with mana value X or less have cascade, where X is the total amount of life your opponents have lost this turn.
Despoiler of Souls can't block.
, Exile two other creature cards from your graveyard: Return Despoiler of Souls from your graveyard to the battlefield.
Flying
Whenever you cast a spell during an opponent's turn, up to one target creature an opponent controls gets -1/-1 until end of turn.
Whenever you cast a spell during an opponent's turn, you may have target creature get -1/-1 until end of turn.
As Ulamog's Despoiler enters the battlefield, you may put two cards your opponents own from exile into their owners' graveyards. If you do, Ulamog's Despoiler enters the battlefield with four +1/+1 counters on it.
Gatherer works better in the Companion app!
, Exile two other creature cards from your graveyard: Return Despoiler of Souls from your graveyard to the battlefield.