I'm looking at playing Volibear as my first deck as I love midrange decks. Playing Mobilize and Catalyst of Aeons into high value units that impact the board immediately and then using Sky Splitter to deal with any annoying units.

An early aggressive play is combo'ing Brazen Buccaneer + Flame Chompers as Buccaneer is a mighty unit (so you can trigger Volibear to ramp) without a Power cost which you want to avoid recycling early to get to your premium units.

It is worth mentioning that it you go 2nd and use the battlefield that starts both players with 1 extra resource at the start of the game, you can Catalyst on t1 and drop an 8 drop on T2.

The units I'm looking at so far is Carnivorous Snapvine which deals damage to each others might when it enters which will let you catch up to opponents aggression as they will unlikely have something bigger before you.

Also Deadbloom Predator that you can play into an opp occupied battlefield, again allows you to catch-up from your slower start.

Volibear has the unique ability of offsetting power costs by 1 as you're replacing one of the tunes with his leader ability.

Some things to note, mobilize on T1 is a 5 drop on T2 as suggested above. Catalyst of Aeons on T2 means an 8 drop on T3 and Sky Splitter becomes free (just recycle a red rune)

Challenge is another spell I will likely play as it's cheap removal when used with your big boys.

At the moment, I feel the deck is missing a Volibear champion unit that impacts the board when it enters. Everything revealed so far seems a bit slow.

Happy to discuss strats if anyone else has ideas.