The VOIDRUNNER'S CODEX is coming! Explore new worlds, fight oppressive empires, fend off fearsome aliens, and wield deadly psionics with this comprehensive boxed set expansion for 5E and A5E!
Just like the title says. I see this quoted as truth all the time, but I do not recall there being an explicit rule that says all encounter effects last only 5 minutes. Does it exist? If so, where?