Since HoG got removed there's no reason not to take philo stone as support Shen to be honest.
Guy has 9cs, he isn't going to have any other income outside of masteries(which I doubt he has, prolly 0/21/9) and runes.
Avarice Blade is pointless and Kage's Lucky Pick builds into nothing Shen wants. Shurelyas > Any of the Kage's upgrades. And HP/5 > AP during lane for Shen, specially such small amounts of AP.