The Worm's Final Rot

This spell is a part of the Bio Instability spell chain and can be found in the Bio Instability Rune Stone.

The Worm has been patient. It has sickened. It has aged. It has hollowed the mind and feasted upon perception itself. But patience has its end, and The Worm's Final Rot is that end. It is the moment The Worm stops playing and simply consumes. When the seniumancer calls upon this spell they are not directing The Worm so much as releasing it entirely. The Worm erupts from within the seniumancer's runic soul with a hunger that has been building through every spell that came before, and it descends upon the target with terrible and absolute purpose. There is no hallucination this time. There is no subtle fading of sensation or quiet theft of thought. The target watches and feels their own body begin to visibly rot - the skin darkening and splitting, the flesh beneath breaking down as The Worm feasts openly and without restraint.

Each round the target suffers 1d12 + the seniumancer's Arcana as Vitality damage as The Worm consumes them from within. Furthermore, each round a 1d6 is rolled. Should a 6 be rolled, The Worm has reached something vital and the target dies instantly, regardless of remaining Vitality. When the spell finally runs its course The Worm retreats, sated, back into the seniumancer's runic soul. Should the target have survived this ordeal, they do not emerge from it unshaken. The experience of witnessing their own rot - of feeling The Worm feed upon them - leaves the target stunned for 1d4 rounds, their mind and body overwhelmed by the sheer terror of what just occurred.