magic resistance stacking

[GIMLI_2]

hi,
as far as i knock, elunes graces' magic resistance bonus stacks with each other. for example an item gets elunes grace with 10% and another item with 20% and a hero has an ability with 30%, would they stack with each other and does someone know the formula?

thanks

 

[Dr Super Good]

They stack additively based on previous experience I had with them. It is important to note that after the total exceeds 100% it will start to act as spell absorption converting damaging spells into heals.

 

[GIMLI_2]

They stack additively based on previous experience I had with them. It is important to note that after the total exceeds 100% it will start to act as spell absorption converting damaging spells into heals.

okay thank you