Skixaris, Bone Seer

Deathsight (Whenever a creature you control dies,
scry 1.)
Whenever a creature you control dies, you may
reveal the top card of your library. If the revealed
card's converted mana is less than or equal to the converted mana cost of the creature that died,
you may cast it without paying its mana cost.
{2}{u}{b}, Exile a creature card from your
graveyard: Scry 2.