Talk:Randuin's Omen/@comment-84.113.65.130-20120206142224

How exactly is the active's duration being calculated ...

Is it defense + magic resist / 100 or +0.5 for every 100 per defense / magic resist the opposite armor type does have another 100 for?

200 armor + 200 magic resist

Does this increase the duration by 4 x 0.5 seconds, or by just 2 x 0.5 seconds?