Oshirokiroi
Source: Alien Archive 3
CR: 12 XP: 19,200
N Gargantuan animal
Init.: +5 Senses: blindsight (sound) 120 ft., sightless Perception: +22
Defense
HP: 208
EAC: 26 KAC: 28
Fort: +16 Ref: +16 Will: +11
Offense
Speed: fly 60 ft. (Ex, clumsy)
Melee: bite +25 (6d4+20 P plus topple; critical bleed 2d6) or wing +25 (6d4+20 S; critical bleed 2d4)
Ranged: sonic burst +22 (6d4+12 So; critical deafen [DC 19])
Offensive Abilities: breath weapon (60-ft. cone, 13d6 A plus Osoran roil, Reflex DC 19 half)
Statistics
Str: +8 Dex: +5 Con: +4 Wis: +0 Int: -4 Cha: +0
Skills: Acrobatics +27 (+19 to fly)
Ecology
Environment: any sky (Osoro)
Organization: solitary, pair, or coil (1–2 plus 6–12 irokirois)
Special Abilities
<p><b>Anharmonic Hum (Ex)</b> The wing membranes of an oshirokiroi vibrate with a series of anharmonic frequencies. A creature that enters or starts its turn within 30 feet of an oshirokiroi takes 3d4 sonic damage (Fortitude DC 19 half).<br/><br/> <b>Breath Weapon (Ex)</b> When not within the gas seas of Osoro, an oshirokiroi can expel extra gas stored in its gas bladder as a standard action, dealing acid damage and exposing creatures in the area to Osoran roil poison. An oshirokiroi can use this breath weapon only once each time it emerges from the gas seas; reentering the gas sea refreshes this ability.<br/><br/> <b>Death Throes (Ex)</b> When an oshirokiroi is killed, its gas bladder loses cohesion and explodes in a burst of high-frequency sound and toxic gases. Each creature within 20 feet of the oshirokiroi takes 6d6 sonic damage and is deafened for 1d4 rounds; with a successful DC 19 Fortitude save, a creature takes half the damage and negates the deafened effect. The area in a radius of 50 feet from the oshirokiroi becomes a dense cloud of toxic fumes that provide concealment. A creature that enters or starts its turn in the cloud takes 4d4 acid damage and is exposed to Osoran roil poison. The cloud can be dispersed in the same way as <i>fog cloud</i> and otherwise dissipates on its own in 1 minute.<br/><br/> <b>Sonic Burst (Ex)</b> An oshirokiroi’s sonic burst is a high-frequency screech that can target a single creature within 40 feet. In addition, an oshirokiroi’s sonic burst has the deafen critical hit effect (DC 19).<br/><br/> <b>Topple (Ex)</b> If an irokiroi’s bite attack hits the target’s KAC + 4, the irokiroi deals its normal damage and automatically trips the target (this takes no action). <h3 class="title">Osoran Roil</h3> <b>Type</b> poison (inhaled); <b>Save</b> Fortitude DC 19<br/> <b>Track</b> Constitution; <b>Onset</b> 1 minute; <b>Frequency</b> 1/minute for 6 minutes<br/> <b>Cure</b> 2 consecutive saves</p>