Good Luck And Have Fun ;D

Tips

Lead the charge with Rolling Thunder and slow enemies with Majestic Roar.
Volibear benefits a great deal from additional health and cooldown reduction.
You must attack four times in rapid succession before Frenzy can be activated--having the toughness to survive for a long time is one way to accomplish this goal.

Rolling Thunder - Volibear drops to all fours and runs faster if chasing an enemy champion. The first enemy he attacks is knocked into the air.
Volibear gains 45% Movement Speed while moving toward enemy champions. Lasts 4 seconds.

Volibear's next attack deals an additional 25/50/75/100/125 physical damage and flings the target behind him.
Cost
40 Mana
Range
300

Frenzy - Volibear's repeated attacks grant him additional Attack Speed. Once Volibear has repeatedly attacked four times, he can perform a vicious bite on his target which deals increased damage based on the target's missing health.
Passive: Volibear gains 8/11/14/17/20% Attack Speed with each attack. Stacks up to 3 times.

Active: When Volibear has 3 stacks of Frenzy, he can bite an enemy to deal 90/140/190/240/290 (+  [20% of bonus Health]) physical damage, increased by 1% for each 1% health the target is missing.
Cost
35 Mana
Range
400

Majestic Roar - Volibear lets out a powerful roar that damages and slows enemies. Minions and monsters are feared as well.
Volibear deals 60/95/130/165/200 (+0.6) magic damage to nearby enemies and slow them by 30/35/40/45/50% for 3 seconds.

Minions and monsters are feared as well.
Cost
60/65/70/75/80 Mana
Range
425

Thunder Claws - Volibear channels the power of the storm causing his attacks to blast his targets with lightning that bounces to other nearby enemies.
Volibear channels the storm, causing all basic attacks for 12 seconds to deal 75/115/155 (+0.3) magic damage, which chains to 4 nearby enemies.
Cost
100 Mana
Range
300

Chosen of the Storm - Volibear heals rapidly for a few seconds when his health drops to a critical level.