Call Lightning

Call Lightning deals 2 damage to all creatures on
the battlefield. For each creature an opponent
controls dealt damage this way, this spell deals 1
damage to its controller.
Upcast {x}{x}{4}{g}{r} (If upcast, it deals 3 damage
to all creatures. For each creature an opponent controls
dealt damage this way, Call Lightning deals
X damage to its controller.
The end of Orrin's patience was a rare sight, but for
those who ventured to see it, it was often their last.