Acid (PSR Supplement)

**PSR** is an alternate ruleset that is compatible with most 5e content.
System Differences The Basics PB: Proficiency Bonus Advantage & Disadvantage Reroll Bonus Dice Ability Check Group Check Contest Passive Check Save Ability DC Ability Scores Strength Dexterity Constitution Intelligence Wisdom Charisma Skills	Encounters Group Turns Round-Table Turns Staggered Turns Your Turn Move Action Bonus Action Reaction Making an Attack Unarmed Strike Sunder Cover Communication Hit Points & Damage Hit Points Hit Dice Temporary Hit Points Massive Damage Damage Types Damage Resistance Max Damage	Time Phases Rest Break: a short rest Camp: a rough long rest Downtime: a cozy long rest Downtime Trading Downtime Activity Environment Common Hazards Extreme Climates Peculiar Traits Resistance Immunity Vulnerability Special Senses Defeat Dramatic Death Conditions	Items Carry Capacity Goods & Currency Optional: Material Goods Consumables Weapons Improvised Weapons Attire & Shields Tools Gear Attunement Objects Damaging Objects Hauling Objects Vehicles Optional: Artillery NPCs Attitude Mount Cohort Stat Blocks

Acid is a damage type.

Caused by corrosive substances, rusting effects, burning pits of acid, and other harmful chemical reactions. Many oozes and some reptiles resist acid damage.
Sources of acid damage may render a creature Exposed, or damage items worn or wielded by the creature.
Constructs made of iron or certain other minerals are sometimes vulnerable to the corrosive nature of acid damage.