Chandra, Awakened Inferno

'This spell can't be countered.
[+2]: Each opponent gets an emblem with "At the beginning of your upkeep, this emblem deals 1 damage to you."
[−3]: Chandra deals 3 damage to each non-Elemental creature.
[−X]: Chandra deals X damage to target creature or planeswalker. If a permanent dealt damage this way would die this turn, exile it instead.