Chandra Erupting Soul

+2: Reveal the top two cards of your library. Chandra Erupting Soul deals damage to target player equal to their combined mana cost. Draw those cards
-3: Target player gets an emblem with "At the beginning of your upkeep, this emblem deals 1 damage to each creature you control."
-X: Chandra Erupting Soul deals X damage to X creatures and those creatures' controllers. If a creature would die this way, exile it instead.