Muold'r, Arcane Rivulet

Shroud
Whenever a creature dies, if it would go to your graveyard, you may exile it instead.
{1}, {t}, Return a card exiled with Muold'r, Arcane Rivulet to its owner's graveyard: Look at the top
card of each player's library.
{2}, Pay 3 life: Add {u}{b}{g} to your mana pool.