Stone Skin Update Suggestion for Wukong
Stone Skin:
If Wukong hasn't been damaged for [8/6/4 seconds at levels 1/6/11], he gains [20/30/40 at levels 1/7/13] (+0.2 bonus Armor) bonus Armor and [20/30/40 at levels 1/7/13] (+0.2 bonus Magic Resistance) bonus Magic Resistance for 3 separate attacks and spells by enemy champions and large monsters or 4 seconds. The cooldown timer can only start when the effect ends.
Wukong's abilities deal 5 (+1 per level) (+0.2 bonus Armor) bonus physical damage (1.5 second cooldown).
This passive does a lot of good things for Wukong. It promotes diving in and out of fights. It enables a second playstyle that is tankier and allowed to buy Armor. It adds skill expression via spell weaving, choosing between two playstyles and choosing Wukong because you know he works well with Armor or because the enemy doesn't work well against his passive. The cooldown on the bonus damage might also give you a reason to keep his ultimate up for a little bit longer to get off another proc of his passive.
This passive also adds a little bit of skill expression when playing against Wukong. You can poke his passive down and only then trade, poke him to keep it down, or proc it ASAP with autos before using your heavy hitting spells. It works like Electrocute, so the Resistances almost automatically reduce its damage. Both players have to keep that in mind during champion select and in-game.
Lastly, it helps out Jungle Wukong by giving him bonus Resistances and damage in the Jungle for a slightly better clear.