Firestorm

Each space can be affected by Firestorm.

Firestorm occurs in Summer on a random selection of spaces equal to 4% of the map for every 40% of the map that is covered by Chaos, prefering Grass, Forest, Soil, Crops and Trenches tiles and avoiding other tiles if possible.

In the Decay phase, Firestorm deals 3 shots of 1 damage to tiles, ground units and air units in an indiscriminate damage step.