Lightning Splinters
Over the Misty Mountains Grim Nightmare#4 (x2)
When Revealed: Each player must choose and discard 3 cards from his hand. Each player assigns X damage among characters he controls, where X is the combined printed cost of the cards he discarded.

The lighning splinters on the peaks, and rocks shiver, and great crashes split the air and go rolling and tumbling into every cave and hallow... -The Hobbit