thanks but i got another one oh and btw sry about my spelling i just drank like 4 redbulls and my hands are moveing faster than my brain but my other ideas are
1.after a archaic relic from a long forgotten race is uncovered the (insert both factions)
declare war to retive the relic
2.after the (good faction) uncover an underground portal to hell AKA (nether) (the evil faction are like the demonds there) the (evil faction) begin pouring out of the portal assaulting the (good faction)