Each PC has supply (SUP) up to their INT score. This is how much resupply the PC brought and represents their ability to plan ahead with what they might need to bring. You lose some SUP each time you replenish an expendable item (like a torch). You regain SUP by succeeding at a check to forage or cannibalize an item. You can buy supply in a town or caravan (usually 1 gp per SUP).

SUP can’t create new things while adventuring. SUP can only replenish or replace the spent, consumed, or lost. SUP only works for items that the PC stated were brought prior to the start of the adventure (not serve as “quantum equipment”).

The GM has the final say on how much SUP something costs, keeping in mind its rarity, value, and size. An antitoxin is small but because of its specificity it has a high SUP. Once a PC has insufficient SUP to replenish their item of choice, they can no longer use that item. Reaching 0 SUP prevents the PC from replenishing any consumable gear. A PC can choose to carry less than their max SUP prior to leaving on a quest.