Acid

Acid is a damage type. Damage types label what kind of harm an attack, spell, hazard, or feature deals.

This page is a compact play reference. If a spell, feature, monster, item, or DM ruling gives a more specific instruction, use that specific instruction.

Use acid when applying damage, resistance, immunity, vulnerability, or features that care about that damage type.

• A damage type does not decide the damage dice by itself; the attack, spell, feature, or hazard gives the dice.
• Resistance usually halves damage of that type; vulnerability usually doubles it; immunity prevents it.
• If an effect changes the damage type, use the new type for resistance, immunity, vulnerability, and related features.
• Roll the damage dice given by the source of the damage.