STACKING-RULE

Stacking rules specify how auras should stack when the same aura or when multiple auras from the same category are applied to something.

stack       Specifies that the auras should stack up to the stacking limit.
never       Auras should not stack and new auras should be blocked.
overwrite   Auras should not stack and new auras should overwrite existing
            ones.
precedence  Auras should not stack and new auras should overwrite if they
            are of a higher level.