Hello this is my build about how i play volibear as a massive damage dealer. It's my first post so don't be harsh on me

I've chosen my runes to boost as much attack speed, give a little starting health and some armor. Because the idea of this build is mostly about attack speed the runes are typical for AS

For masteries i chose 9/21/0 for some attack speed Alacrity in offense and to get survivability from defense. For summoner spells i have Exhaust and Ignite

I choose these for the obvious attack speed boost.
This item is for the attack speed and health, it also gives a nice passive that is like your ultimate.
Again with the obvious attack speed and there is a nice magic resist boost and a passive that also gives magic resist.
Now this item is a must have because of its health, attack speed, slow, AP, attack damage and movement speed.
This item will give you some nice armor and health what is always good because of your Frenzy
Is the cherry on top because of its nice AD and MR boost + its passive is pretty decent too

The best item for health and life regen if u want to have more survivability get this item also it gives a nice boost to your Frenzy
Against heavy AD team otherwise no point
Against heavy AP otherwise u have items that give enough MR so no need

Pretty standard for voli throw over, slow, ult and then start smashing and to finish off with your Frenzy you will tear apart about everyone. In team fights u go in first and start smashing the squishiest champs with your ult on and you will almost always get a kill or few

Voli is the best champion because u can play him so many ways and is pretty easy to master and he has the most OP passive of all. Thank you for reading and i am waiting for feedback on how to improve my guide