Talk:Poppy/@comment-26489540-20150821074914/@comment-4636093-20150821112557

It doesn't. True damage cannot be reduced by any means.

(Except by lowering the stat which it scales off if you want to be technical, Trynd using Mocking Shout on Olaf/Fiora/Darius/Yi/etc. lowers their AD so lowers their true damage for example).