Chandra, Eternal Inferno

+1: Look at the top card of your deck. If it is a red card, you may discard it. If you do, Chandra, Eternal Inferno deals 3 damage to any target.
-X: Chandra, Eternal Inferno deals X damage to any target.
-7: Target opponent gets and emblem with: "Whenever you cast a spell, this emblem deals 4 damage to you."