Catalytic Mouth to Debilitating Decrescendo
In 2002, I contributed several spells to Spells and Spellcraft, published by Fantasy Flight Games. Not too long ago, I retooled a few of the spells I contributed to Spells and Spellcraft for folks to use with 5E D&D game. Many of the spells I wrote for Spells and Spellcraft were third-edition versions of spells I created for AD&D way back when. (Nota Bene: The link for Spells and Spellcraft is an affiliate link.)
Catalytic Mouth
3rd-level illusion (ritual)
Casting Time: 1 minute
Range: 30 feet
Components: V, S, M (a small bit of honeycomb from the hive of giant bees and jade dust worth at least 10 gp, which the spell consumes)
Duration: Until dispelled or activated
This spell duplicates the effects of magic mouth, but with the additional ability that the magical mouth can speak a command word or phrase used to trigger a spell or magic item within 30 feet of the space in which the catalytic mouth is placed. Once the catalytic mouth speaks the command word or phrase, it is dispelled.
Crescendo of Indefatigably
1st-level enchantment
Casting Time: 1 reaction, which you take when about to attempt an action
Range: Self
Components: V
Duration: Instantaneous
You sing a single, pure note when you are about to attempt an action. You have advantage on the die roll made to attempt that action.
Debilitating Decrescendo
3rd-level enchantment
Casting Time: 1 action
Range: 60 feet
Components: V
Duration: Instantaneous
You sing a powerful, clear note that degenerates into a discordant gasp directed at a creature you can see within range. The target must make a Wisdom saving throw. On a failed save, it takes 5d6 psychic damage and acquires one level of exhaustion. On a successful save, the target takes half as much damage and doesn’t gain a level of exhaustion. The target can never acquire more than one level of exhaustion from this spell.
At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, the damage increases by 1d6 for each slot level above 3rd.
