Whenever you cast a red spell, untap Chandra.

{T}: Chandra deals 1 damage to target player or planeswalker. If Chandra has dealt 3 or more damage this turn, exile her, then return her to the battlefield transformed under her owner's control.

+1: Chandra deals 2 damage to target player or planeswalker.

−2: Chandra deals 2 damage to target creature.

−7: Chandra deals 6 damage to each opponent. Each player dealt damage this way gets an emblem with "At the beginning of your upkeep, this emblem deals 3 damage to you."