Choose crystal-boosting portals and curses

Portal choices after Chaos Chamber encounters, including Crystal-focused portals and Dragon Lord curse encounters.

Before you go

Unlock the Chaos Chamber and begin a run.
Have a reason to accumulate Rainbow Crystals, such as a planned reward-room category.
Be able to handle a curse penalty if you choose a Dragon Lord portal.

Clear an encounter and inspect the available portals before choosing.
When a Crystal-focused portal is offered, compare its reward against other room options.
Choose it when the extra currency supports your target; otherwise select a safer or more useful option.
If you enter a Dragon Lord encounter, review the curse difficulty and penalty carefully.
Accept only a curse your build can manage, then clear the next encounter and collect its drops.
Complete practical room objectives and pick up their Crystal dice at the reward point.
Use accumulated Crystals for Blessings during the run or save them for Loot of Chaos.

Crystal gain comes from several sources during a run, so do not risk a clear for one optional bonus.
This method is about earning currency; choose the Bunny category separately in the final reward room.

Repeat these choices on each run when the relevant portals appear; portal options are not guaranteed to be identical every time.

Taking every Crystal option without considering the next encounter: account for your build and current risk.
Confusing a Crystal portal with an item-category reward: currency is spent later.
Accepting a curse without reading its penalty: review the choice before confirming.

Stop prioritizing currency portals when your planned spend is covered or when survivability and run completion need priority.

Sources & fact checks

Open a guide to find other locations and see what the item is used for.

Crystals and reward currency

Portal selection and manageable curses can increase a run’s Rainbow Crystal budget for later purchases.