So bungie can make the story up but the vex and the cabal team up for whatever reason. Or it can just be a three way fight in the raid. But the raid happens on mars and starts off with you having to fight through waves of cabal and vex so you can gain passage through a vex portal. It would be a non darkness zone. And there will be an exotic chest after the fight. After you go through the portal there will be a jumping puzzle somewhat similar to the one in Vog with the disappearing platforms but harder and will be multiple directions to go but only 1-2 will be correct. Another path will lead you to another exotic chest that requires you to be quick on the platforms. Next will be the first boss fight which should be a vex encounter. I haven't thought of any names the boss should have. It will be a room big enough to hold oracles and some alternate rooms that will be discussed later. The boss fight starts off with some adds spawning and oracles after about 10-15 seconds of them spawning. However these are special oracles. They can only be destroyed by the boss. You can gain his attention by destroying a normal oracle on the same area of the special one. There will be about 4 oracles one on each direction of the boss(front, right, left, and back). Each one of the special oracles will take down his shield as they are destroyed. After taking down his shield you can dps the boss. If you do not destroy the oracles within the certain time limit, one person must go to 1-2 of the rooms with a new relic in there. The relic is tbd, but once the person has the relic there will be an oracle above the boss and destroy it with one of the relics abilities. The boss fight could also be anywhere in the raid I just think that this would be a cool idea.