Prismatic Dragons

These enormous creatures are far rarer than short or long snout dragons, and are far more powerful. They live exclusively on the Astral Plane, and cannot be discovered by any magical means. The most famous of them are the three that guard The Fates, Kanyrr, Seondul, and Onyl.

All prismatic dragons are true natural, preferring to stay out of the way of the comings and goings of people abroad. However, their wisdom is legendary, and those who wish to one day be great leaders often seek council with these beings. Any attempt to control or capture one ends poorly, due to the devastating effects of their mind melting breath, leaving creatures unharmed but as dumb as mice.

Stats
A Bajillion HP

28 AC (Natural armor + Int Mod)

Perfect Reflexes: Prismatic dragons know how you will act even before you do. Their intelligence modifier is added to their AC.

Breath: (Recharge 5–6) Creatures in cone make DC 20 Cha saving throws. On failure, their Intelligence becomes 1. A successful save leaves you stunned for one round.