Kathryn, Pyromaniac

+2: Each opponent gets an emblem with "At the beginning of your upkeep, this emblem deals 1 damage to you."
-3: Kathryn, Pyromaniac deals 3 damage to each non-Dog creature.
-X: Kathryn, Pyromaniac deals X damage to target creature or planeswalker. If a permanent dealt damage this way would die this turn, exile it.