Effermhor’s Hypersonic Assault

What's it called? Effermhor’s Hypersonic Assault (in short, EHA)

What does it do? Effermhor's is one of the three (you could include Pragi's Lost Gaze too, but this last one is very seldom used) main room offensive spells, all three quite similar in their form and their effects, and the other two being Pragi's Fiery Gaze (the most popular) and G'flott's Olfactory Nightmare. Effermhor's creates a blast of pure sonic power that hurts in varying degrees all creatures with ears in the inmediate surroundings of the caster.

It used to be a tiny bit faster then PFG, but its main advantage (the fact that it affects trolls easier) and disadvantage (less accesible components) are still the same. Damage may be in a similar range to Pragi's, although I have de subjective feeling (maybe developed when it was faster to cast, or because it affects trolls) that it does slighty more damage.

Where is it? Like most spells, at the Unseen University Library, and more specifically, in the Invoakatyons in thee Mysterie of Wynd grimoire, the easiest to get to, and nearest to the the entrance door.

What does it require? A jar of mandrake roots (not consumed, except in terrible failiures) and a beeswax candle (consumed).

What skills do I need? Evoking, Channeling, Binding, Dancing, Air

Has it worked? A correct output should be something like this:

You prepare to cast Effermhor's Hypersonic Assault.
You check the best-before date and tap the top of the jar of mandrake roots, sensing their potential.
You squish the candle into two lumps and stick a lump in each ear.
You gingerly open the jar and mutter a quick oath of binding on the roots.
Swirling one finger in the air above the jar, you form a small cyclone.
The conical cyclone begins to amplify the screaming of the mandrake roots.
The cyclone swirls around you.
The sound (see notes).

The cyclone dissipates into the atmosphere and the sound fades away

Help Information:

Effermhor's Hypersonic Assault - an extremely loud noise.

Effermhor's Hypersonic Assault is a first order offensive spell that creates a blast of raw sound that will cause extreme pain to anything in the vicinity that has ears.

Notes: the damage caused by the spell is unsual in that it is easily predictible, as in the other room spells, from the outputs of the casting (although not as a 'precise' amount of hps taken away from your oponent, but as a 'percentage' of the damage done as related to the victim's maximum amount of hps). Depending on the damage the sound:

grates the target's nerves (0-15%)

hurts their ears considerably (15-35%)

makes their heads shudder painfully (35-55%)

causes their eardrums to burst (55-75%)

makes blood ooze from the ears and nostrils (75-90%)

causes bones in their bodies to explode (+90%)