Otto's Warding Tones

All creatures affected by this spell have their ears filled with loud tones only they can hear. The notes drown out all other sounds, effectively making the creatures deaf. This gives immunity to certain sound-based attacks, such as a siren's song, a banshee's wail, drums of panic, drums of deafening, or the first use of a horn of blasting. The spell does not give immunity against attacks that are caused by vibrations: shatter, the breath weapons of certain dragons, the second use of the horn of blasting, and so on. The spell also does not hinder the effects of holy word, most known power words, true name, or similar magics.

The effects of deafness are: a -1 penalty to surprise rolls, a +1 penalty to initiative, and a 20% chance of spell failure for spells with verbal components.

The material components are two lumps of bee's wax and a string from any orchestral string instrument.

Notes: Uncommon or rare spell (WoG).