It is common knowledge to those who know about the existence of the Sovereigns that they are not allowed to meddle in the affairs of their original plane. Once a Sovereign oversteps their authority, the Fates presiding over the path of life would reverse or change the supposed outcome of the Sovereign's meddling— and the outcomes were never good.
Frankly, Aron and Jared guessed why Kyran told them not to expect anything from Mannick. They also knew that the latter was only an essence because although his mage level was low, his Array knowledge was pretty advanced. Jared even felt that Mannick's Array knowledge far exceeds his own, which few people could actually achieve. Cade and Nolan were the only ones who exceeded his Array Knowledge in the whole empire. That was, of course, before he met Mannick.
