but it still screams. it's explicitly ear-splitting (as in, that's literally the term it uses in the description). one of the lair features relies on a "trick of acoustics". it's very clearly a sound-based monster. which is why i think turning around and saying "oh silence doesn't work because uh it's psychic energy and telekinetic force" just feels like a copout, and frankly unintended as well. i mean, if it were intended, why wouldn't it just say effects like silence don't work, or, even better, that it's psychic damage - you know, the damage type for psionic effects that the dragon already uses - and not thunder damage - you know, the damage type for sound? that's not even getting into how it simply says it's composed of psychic energy and telekinetic force - it says nothing about how that energy and force is delivered. the way the breath itself is described sounds very much like the sound delivers that energy, meaning removing the sound would also prevent the energy from traveling.