So what's Osiris' curse? That's anybody's guess, but the trailer makes it seem as though it has something to do with an impending invasion by Vex. It's been rumored for a while that the Vex have access to time travel, possibly even seeing through time to adjust their tactics; the trailer is the first confirmation that this may be true. Perhaps in coming to understand the Vex, Osiris began to see through time as well, and that has something to do with his cu There's one more wrinkle to this story...