ver.

Storm Burst

Ice
Lightning
Sorcery
Level 4
Charges: 4
Unleashes a 8 tile burst of storm energy.
Each tile in the burst takes either 20 ice damage or 20 lightning damage.
Units dealt ice damage are frozen for 4 turns.
Units dealt lightning damage are stunned for 4 turns.

Attributes:

20Damage
8Radius
4Duration

Upgrades:

2 - Stormshield
Allies in radius are not affected, and instead gain ice and lightning immunity for 4 turns.
4 - Dual Nova
Enemies take both lightning and ice damage instead of just one, and are both frozen and stunned.
5 - Spirit Nova
Summons a Storm Spirit for every 40 damage dealt