Cone of Decay
Occult Spell, Necromancy, Incantation (2 AP; max 5 minutes)
APC: 5
SPC: 40
Range: Self (40 ft cone)
Requirements: Gesture, Verbal
Duration: Up to 5 minutes
All inanimate plant life in the area immediately withers. If you incant the Spell for its maximum duration, then all inanimate plant life in the area dies unless its trunk is larger than 30 ft in diameter, in which case it remains withered from malnutrition. When you cast this spell, and at the start of each of your turns while Incanting, make a magic attack against the FORT of each creature in the area. On a hit, a creature takes 3d10 Necrotic damage. On a miss, a creature takes 1⁄2 damage. On a crit, a creature also gains Fatigue. If you move, either willingly or otherwise, while incanting this spell, the spell ends.
Upcharge: +10 ft to the cone per +10 SP.