Chance Encounter: there is an orc sitting on a log by a fire...

You spot an orc sitting on a log by the fire...

A wisdom check:
DC14: You notice a sword next to him.
DC16: You spot blood on the handle.

Even with his injured hand he fights to defend himself but if the PCs ask to share his fire, he grunts. He understands a few human words. If they heal his injuries, he will not attack them.