Every attack deals a specific Damage Type.
Physical Damage Types
Energy Damage Types
Damage Resistance
When a creature or an object has Resistance to a Damage Type, halve the damage dealt by attacks of that type, rounding down (minimum 1 damage).
Damage Resistance does not stack. If multiple effects would grant Resistance to the same Damage Type, apply it only once.
Damage Vulnerability
A creature or an object with Vulnerability to a Damage Type takes double damage from attacks of that type.
Damage Vulnerability does not stack. If multiple effects would cause a creature to be Vulnerable to the same Damage Type, the damage is still only doubled.
Resistance and Vulnerability cancel each other out. If a creature has both Resistance and Vulnerability to the same Damage Type, it takes damage normally.
Damage Immunity
When a creature or an object has Immunity to a Damage Type, it takes no damage of that type.
If an attack deals multiple Damage Types, only the immune portion is ignored.
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