|Year of Sleeping Dragons||Dale Reckoning||Cormyr Reckoning||Northreckoning||Mulhorand Calendar||Present Reckoning|
|-408 DR||-433 CR||-1440 NR||1696 MC||-1766 PR|
- Karsus discovers heavy magic, a honey-coloured form of solid magic. In one of his first experiments with heavy magic, Karsus nearly causes his enclave to fall. He removes the heavy magic he created, pushing it over the side of the enclave. The heavy magic falls to the ground, where it slays the renegade arcanist Wulgreth, turning him into a lich when the heavy magic absorbs his life energies.