Hello. Since we are building MR and armour through the game, there is no need for Aftershock. It's really very useful early, but since we are playing aggressive we need the press the attack. If you are the resolve fan, you can go for Grasp of the Undying instead of press the attack. Aftershock is something that should be played on Volibear only if Volibear is a jungle. I hope this was helpful to you, thank you for commenting. Jungle Volibear upcoming for next patch, keep up ;)

I'm glad it helped you and thank you very much for letting me know it <3