“Add negative to random consumable at the end of the round”
9$
Can be copied by blueprint
This could allow observatory to provide better value than 2,25/3,37xmult and I see it as primary function
Secondly if you decide to hold a specific consumable for a round you could block it from appearing in the shop
It would also allow to hold death and other tarot cards for a specific card you’re looking for when you run out of discards/hands
The other thing is storing spectral cards for when you need them (ecto, seals)