Chandra, Fierce Fighter

+2: Deal one damage to each creature and planeswalker your opponent controls. For each creature and planeswalker killed this way add {r} to your mana
-3: Deal 3 damage to each other creature and planeswalker. Add {r} for each creature and planeswalker killed this way.
-X: Deal X damage to any target. skip your next cleanup step. (Cards that have damage on them retain that damage until the next clean-up step.