The spell will summon a violent thunder storm. Strong Gale blows and heavy rainfall pours from the sky, which makes it impossible for most fliers to take flight under such bad weather, thus making most fliers a much more easier prey. Area of effect: all units in battle.
- All natural FLYING units which fail to resist the spell are grounded and suffer -1 initiative;
- All non-flying units that should gain flying ability with the use of Carpet of Flying will be grounded, but do not suffer -1 initiative.
Strong units such as Red Dragon with high verdancy spell resistance are unlikely to be affected by this spell