Solar Flare

+1: Until your next turn, whenever a creature attacks you or a planeswalker you control, it deals 1 damage to its controller.
-2: Destroy target creature with power 3 or less. If a creature is destroyed this way, you may pay X. If you do, deal X damage to each player.
-7: You get an emblem with "Whenever a creature attacks you or a planeswalker you control, its controller loses 2 life."