Skyshock Electrocuter

Flying, pulse (Whenever you cast an instant or sorcery spell, you get {e}.)
Pay {e}: Skyshock Electrocuter deals 1 damage to each opponent and 1 damage to itself.
Skyshock Electrocuter gets +0/+1 for each other Thund you control.
It may look like a small flying humanoid in a storm cloud. Nope. It's the whole storm.