Limbo

Limbo was the Astral dominion to which the batrachi retreated in -31500 DR. There, they founded a realm called the Supreme Throne.

In the Great Wheel
In the Great Wheel cosmology that the Forgotten Realms campaign setting used prior to 3rd edition, Limbo (also known as the Ever-Changing Chaos of Limbo) is the name of a plane of pure chaos, home to the githzerai and the slaadi.

In earlier editions of the game, Limbo was the home of:
 * Fenmarel Mestarine
 * Leira
 * Tapann
 * Tempus