Equestria Prevails

Equestria Prevails is a DnD5e story inspired by the DeviantArt artist Equestria-Prevails, revolving around an alternate universe where after an attack on Canterlot, Equestria is currently at war with a griffin empire known as The Griffonian Empire whos leader, Gryphus, sought to expand his rule by establishing a vast empire, The Griffonian Empire, and in 1006 y.a.b. he invaded eastern Equestria, sweeping through the kingdom towards its capital. He was defeated in the single day Siege of Canterlot. Gryphus' younger brother Rhosus claimed the throne after his death.   Equestria and Griffonia continued to war and in 1010 y.a.b. Equestria launched an eastern Equestria defensive led by both Princess Celestia and Princess Luna which resulted in Celestia wrongly using the Elements of Harmony to obliterate the gryphon offensive, causing the Elements to grow faint and forcing Celestia to be trapped in a prison void similar to that of which Luna was banished to tend to the Elements, leaving Luna as the sole Princess to lead Equestria and bring an end to the Equestrian/Griffonian war.