Rohan took out a potion from his back and quickly drank it. Inside the leather bag hanging there, it was its most important belonging as well as a couple of weak mana potions. He had prepared this bag before leaving for the trip, as he wanted to be ready under any circumstances.
He let the empty vial fall on the ground and rushed toward his next target. Although the material used for the vial was without a doubt magical, Rohan wouldn't put back an empty potion inside his bag right now.
If he needed at some point to quickly take one to regenerate his mana, and he only caught the empty, that would be a ridiculous moment. He preferred to evade this situation and gave up the vial which fell on the rocky ground.
He had only killed three beasts, and none other had been killed by the nomads. At most, some of them were in a stalemate against the warriors or a large number of fighters, but it was only a question of time for them to be eviscerated.