The Lost Gods is a gathering of three novels from across the planes. The first and third are by Kate Novak and Jeff Grubb and are based in the Forgotten Realms while the second is from the DragonLance universe by Douglas Niles.
This is also Book 15 of The Harpers series
This is Volume 2 of the Lost Legends series. Part of the Dragonlance Saga.
This is the third and final novel of the trilogy.