Blackthorne's Ball of Maggots causes a squirming, globe of rot grubs, 5 per level of the caster to a max of 100, to strike the target unless the target saves vs spell at -3. If successful, then the ball misses the target, otherwise, the ball hits and the rot grubs begin to burrow their way into the victims heart. These grubs are specially magically created, and a cure disease spell cast on them will only kill 1d20 of them. Also, they have a 15% magic resistance, so getting rid of them will not be easy. Every grub causes a point of damage as it burrows towards the heart, and they will reach it in 1d6+4 rounds. The damage is only suffered once, but if the grubs reach the heart, instantaneous death occurs. A heal spell will get rid of the grubs, but it will not heal any damage.