Brenner, Mayer Alan
Spell of Apocalypse (1994)

Will Maximillian the Vaguely Disreputable give magic to the masses? Will the Creeping Sword find out who he really is? Will the warring factions of the gods come to their senses before all is lost?
Mayer Alan Brenner masterfully pulls all the loose ends together in this fireworks-loaded finale, fourth in The Dance of Gods series.
Dance of Gods series: 1. Spell of Catastrophe, 2. Spell of Intrigue, 3. Spell of Fate, 4. Spell of Apocalypse
 
Author's website: mayerbrenner.com