Love this build. I haven't played very long but I've played MOBA's before. Namely Smite and a bit of Dota. So I am used to the terminology and basic tactics. I have always played support. So when I picked up Volibear knowing nothing about him. Except for the fact he is "my wittle care bear". And I of course used him as support. Now that I know that most people use him jungle. I have a hard time believing it. He works so well as a support and the fact his W only get's more powerful the more health you build means that building full tank is a valid option.

This looks really nice and has a good amount of love and thought put into it. I would recommend putting in WHY you choose your masteries and what they do. A lot of guide writers and reviewers look for that especially. There is something you need to do for both your Runes and your Items which is to give the total stat from them. You have some of them which is good a start and most of them are explained well. And you have a few Coding errors like NINJA TABU and under your Attack speed marks you have COLI. Statikk Shiv is a waste of time to build on Volibear as it's build for crit. The reason this is recommend is because of the lightning effect. similar to an old s2 item built from Recurve Bow and catalyst the protector. Try Blade of the Ruined King it gives you a slow, lifesteal, movement speed buff and %damage. I hope these help I know if you cover these things your guide will look better.

Maybe against a full magic damage team, but that's never really seen because of ADCs ... it's just a waste of gold to buy the most expensive boots

Mercury's Treads shouldn't be purchased along with Spirit of the Ancient Golem because the passive tenacity of both items doesn't stack or multiply. Besides, you cannot max an ability at level 8 o_o