How much damage does lava do?
On contact?
On submersion?
I know being in hot temperatures for long periods of time invokes levels of exhaustion. But the DM’s guide appears to neglect damage for lava, but it does specify damage for “falling” etc.
During the session last night I chose 10d6 for submersion for level 5 characters and that worked for the moment, but now I’m researching what the damage should have been.
I would say it would be a based on the Improvising Damage chart on page 249 of the DMG, which says you take this much damage per round:
10d10 …, wading through a lava stream
18d10 Being submerged in lava, …
That sounds really nasty actually…
For contact and using the same chart, I would probably default to 1d10 (burned by coals on the chart), or possibly 2d10 (stumbling into a fire pit) if a hand/foot was immersed briefly.