Invoke the Leviathan
Two-action ancestry feat transforming you into a Gargantuan ijtikri leviathan for 1 minute, granting AC 22 + level, 10 temporary HP, fly 40 ft./swim 60 ft., single-action tentacle...
A typical ijtikri's leviathan transformation is their last act in life, irreversibly swelling to immense size before seeding the sea with new life. You aren't typical; you can transform into a Gargantuan ijtikri leviathan battle form for 1 minute. You can Dismiss this effect. When the effect ends, the revitalizing gases from your leviathan body fill a 30-foot emanation, restoring 5d8 Hit Points to living creatures in the area. You gain the following statistics and abilities. AC = 22 + your level. Ignore your armor's check penalty and Speed reduction. 10 temporary Hit Points. Speed 10 feet, fly 40 feet, swim 60 feet The following unarmed melee attacks. You're trained with this attack, and your attack modifier is +25. This attack is Strength based. If your unarmed attack modifier is higher, you can use it instead. Melee Single Action tentacle (backswing, grapple, reach 30 feet), Damage 3d10+15 bludgeoning; Area Fire Two Actions wail (60-foot cone), Damage 3d10+15 sonic (basic Reflex save versus the higher of your class DC or spell DC) Acrobatics modifier of +15 and Athletics modifier of +25, unless your own modifiers are higher.