Overshock

Overshock deals 3 damage to any target. If you
played one or more Shock cards this turn,
Overshock deals 7 damage to any target instead.
"Lightning fell from the sky the first time, killing one
of our soldiers. But then, it fell like rain. Instantly, the
clouds shrouded over our heads and bombarded us.
Our bodies remain in ashes now. And our last sights
were the storm clouds over our heads, and our
charred, burnt bodies."
— Genkah's Myths