Tuntematon recognises one of the liquids as healing potion and one other as antitoxin, though he is not entirely sure how powerful the former is. One he fails to identify.
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You know, technically the DC for identifying potions with Spellcraft is 25 (and no reroll). But that seems a bit high for common ones, so I'm going to have the DCs vary to what I see fit.
For example, the DC for identifying a healing potion will be 15, but to figure out how effective it is (Cure What Wouds) is higher. Exactly what the DC is depends on the corresponding spell's level.
Holding his head, the halfling scrambles up to a sitting position. He takes a moment to look around, studying the party, the charred trees and dead ettercaps.
"Not entirely sure on the details.. But I guess I should thank you", he says.