Ao

Ao is an overdeity ruling over Forgotten Realms universe. He had banished all Faerûnian deities with exception of Helm to Toril for ignoring their worshippers and theft of Tablets of Fate performed by Bane and Myrkul, which led to creation of Bhaalspawns as Bhaal having foreseen his own death which happened during that period and which he couldn't prevent, created them to act as fuel for resurrection ritual.

According to Cyric Ao banned deities from directly intervening in affairs of Bhaal progeny.