The map has a 15% armor pen buff. Armor pen runes with this buff and most champions are dealing close to true damage on their abilities.
Combine this with the fact that Wukong and Pantheon are very strong at level 3 anyway, and you have a really good chance of snowballing.
I question whether the 15% reduction is really needed, but then again I just played against a rammus that wouldnt die even with black cleaver, last whisper, armor pen runes and IE crits.
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