Councilman of Mythoria

Players can play cards from their graveyards.
Whenever an opponent casts a spell from their graveyard, that player loses life equal to its converted mana cost. You gain life lost this way.
{3}: Split second, Exile target card in a graveyard. Any player may use this ability. (As long as this ability is on the stack, players can't cast spells or activate abilities that aren't mana abilities.)