Glorywield Task Mage

{w}, {t}, Discard a card: Glorywield Task Mage deals 3 damage to target nonwhite creature.
{1}{w}, {t}, Discard a card: You gain 5 life.
{4}{w}, {t}, Discard a card: Separate all creature cards in your graveyard into two piles. Exile the pile of an opponent's choice and return the other to the battlefield.