Velka, Goddess of Sin

Hexproof
{2}{b}{u},{t}: Counter target instant or sorcery
that costs X or less where X is equal to your
devotion to black. (Each {b} in the mana costs of permanents you control counts towards your devotion
to black.)
{2}{w}{b},{t}: Deal 3 damage to target creature, if
that creature would die, exile it instead.