Talk:Abyssal Mask/@comment-15675781-20181019234258/@comment-17903049-20181206010450

That math isn't correct. MPen works by subtracting the MR someone has, while the percent increase occurs at any point (it makes no difference when it does since all math used is multiplication). 300 damage to someone with 100 MR would deal 150 damage. If you have 50 MP and they have 100 MR, it would deal as much as if they had 50 MR and you had 0 MP, which would be 200 damage. The aura just increases damage dealth by 15%, so both of those damages would be 172.5 and 230. For the first one, it would be like having ~26.1 additional MP, while the second would be ~19.6 additional MP.