Corrosive Engravings

These tin sheets are bound in brass and show significant signs of erosion. The grimoire's title is acid-etched, and flipping between the sheets leaves your fingers covered in flecks of rust and powdery metal.

Activate [F] (concentrate)

Frequency once per day

Effect If your next action is to cast an acid or poison spell that deals persistent damage, any creature who takes persistent damage from the spell is also