MagicPen red and quints seems pretty standard.
yellows and blues?
I would have gone flat AP quints. And maybe mana regen yellows.
I'd say go off Voyboy's, he seems to be pretty good at it. Armor and MR (he is a bruiser)
I play 1 of each.
1 quint MPen with reds.
1 quint Flat MR with blues.
1 quint Flat Armor with yellows.
I start with a Doran and it's really enough so far.
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