Improvised Damage
Generic Hazard
The Improvising Damage table gives guidelines for determining damage on the fly.
The Damage Severity and Level table is a guide to how deadly these damage amounts are for characters of different levels. Cross-reference a character’s level with the damage being dealt to gauge the severity of the damage.
Nuisance damage rarely poses a risk of death to characters of the levels shown, but a severely weakened character might be laid low by this damage.
Deadly damage poses a significant threat to characters of the levels shown and could potentially kill such a character that’s missing many Hit Points.
Source: Dungeon Master’s Guide (2024) p. 30