Hello,
There is a bug with the Spell Damage Reduction ability from Runed Bracers where, if you have multiple instances of this ability on a unit with different reduction factors, the most recently added ability is used.
Observed on: 2.0.1.22498
Expected:
The order in which the abilities are acquired should not matter. The greatest reduction should take precedence, i.e., if the unit has two such abilities and one ability reduces the spell damage by 50% and the other does by 75%, the 75% one should be used regardless of the order in which the abilities were added.
Actual:
The order matters. The ability added last to the unit is used even if the spell damage reduction is less.
Extra:
The ability also conflicts with Elune’s Grace, which modifies the taken spell damage as well, in the order the abilities are added.