Delvarnis

Trigger A creature Casts a Spell that Delvarnis knows

Effect Delvarnis expends a spell slot of the same level and then attempts to counteract the triggering spell with a bonus on the check.

Delvarnis is driven forward by a singular, otherworldly will, guiding their actions. Whenever Delvarnis attempts a Will saving throw against a mental effect that would control or dictate their actions, Delvarnis treats the result of the saving throw as one category better.

Trigger Delvarnis is captured alive

Effect Blood pours from Delvarnis' ears and nose, and they drop dead on the spot. An adjacent PC who witnesses this unexplained death must succeed at a DC 27 will save or become Frightened 1.

Delvarnis inflicts an additional 4d6 mental damage with melee Strikes made while he wears a mask. On a critical hit with such a Strike, the creature struck becomes Frightened 1.

If a reaction would disrupt Delvarnis's spellcasting action, he attempts a DC 15 flat. If he succeeds, his action isn't disrupted.