With this week’s weekly reset, you can start obtaining additional 
Nebulous Voidcore to bonus roll more bosses for loot!
Before this week, the only source for bonus rolls was the Great Vault, but now you can obtain an extra bonus roll every week with the weekly Voidforge turn-ins.
How to Unlock Additional Bonus Rolls in Midnight Season 2
To unlock the additional bonus rolls, you must complete the quests In the Catalyst’s Shadow (provided by Decimus in the Voidstorm) and Prismatic Potential (provided by Orin Straylight, by the Catalyst in Silvermoon).
The Elementary Voidcore Shards from the Prismatic Potential quest can be looted from content such as Venomous Abyss bosses in any difficulty, Mythic+ dungeons, Bountiful Delves, and Nightmare Prey Hunts. Note that both quests have been available since the beginning of Season 2, so you may have already completed them.
Once both initial quests are completed, you can receive one additional Nebulous Voidcore per week by paying one of the following to Orin Straylight in Silvermoon:
- 5,000 Gold (Nebulous Voidcores: Gold)
- 80
Veteran Dawncrest (Nebulous Voidcores: Veteran Dawncrest) - 2,000
Voidlight Marl (Nebulous Voidcores: Voidlight Marl)
Although you can now obtain up to two bonus coins per week, remember that you are still limited to bonus rolling a boss once per week per difficulty. Good luck with the remainder of your loot!