Lark, Crotchety Outlaw

Whenever you cast a noncreature spell, Lark
deals 1 damage to target player.
As long as a player has lost 1 0 or more life this turn, instant and sorcery cards in your graveyard have flashback. Their flashback
cost is equal to their mana cost minus {x}
where X is the amount of life each opponent
has lost this turn.