Just won the lottery at crota and got the 35 oversouls so I automatically get necro and the catalyst BUT when I put the gun on, the catalyst is not there. In the patterns and catalyst tab, it says that I got the catalyst but it’s nowhere to be found. Anyone know where or how I can get it?
The catalyst drops from a secret quest you have to do in the raid with Necrochasm equipped (stand on a few plates to activate, kill knights with swords). After you get the catalyst you have to get 15 more oversoul essence to complete it. So you won't have to do the final step, but you just need to do the puzzle in the raid to acquire it.