Fire Storm

Place a devastating fire storm in a target 7x7 area.

Upon casting, fire will flood the storm area. Then for 20 turns, fire will spread, and Fire Tornadoes will randomly spawn.

Fire Tornadoes are 2x2 in size and last 5-10 turns. Each turn, they deal 10-24 fire damage to all units within, with a 25% chance to Ignite and a 50% chance to Knockback in a random direction.