Talk:Irelia/@comment-173.209.168.28-20120511190010/@comment-131.252.4.4-20120511194709

it's multiplicative for the duration of those CC effects, i.e. duration of effects after 35 Tenacity is 0.65xnormal duration, duration after Ionian Fervor without Tenacity is 0.60xnormal, duration after both is 0.65x0.60xnormal duration=0.39xnormal, which is 61% CC reduction, including juggernaut the math is 0.65x0.60x0.90xnormal=0.351xnormal, which is 64.9% CC reduction.