It’s not a 100% guarantee, but I’m fairly certain that 6 months down the line it’ll be added to the world-pool of exotic drops just like Thunderlord and Arbalest. Give or take maybe like 1-2 months. Either way, if that sounds like a long time to wait for the easier method to get it, just slowly work toward the triumph before the event ends. We have 3 weeks total, there’s no rush to get it in the first few days.