Muscle Wizard!

While the other nerd took up magic to learn or unlock the mysteries of the universe or whatever, you did it to better learn how to get SWOLE!  As a muscle wizard you are focused on bruising, bashing hurting and other wise directly damaging your enemy. 

The Brain is the strongest muscle!

Beginning when you select this school at 2nd level, the gold and time you must spend to copy a spell that deals bludgeoning or force damage into your spellbook is halved.

Beast Mode!

Starting at 2nd level, you can use magic to make your self a BEAST!  You can use a bonus action to funnel your magic into your fists and add your spell casting modifier to all strength based attacks until the start of your next turn, OR you can use it to toughen your self up by using a reaction to add your spell casting modifier to your AC until the end of your next turn

Protein!

Starting at 6th level, when you regain health from any method other than hit dice or a long rest, you may also regain a number of spell slots up to 1/4 of your wizard level (Minimum 1)

Muscle Wizard casts FIST!

Beginning at 10th level, You learn Bigby's Hand automatically, and may cast it using any level spell slot.  If you use a first level spell slot, Bigby's hand will be cast as a 5th level spell.

Juicing

Starting at 14th level, Once per turn, if you take the attack action, you may sacrifice a spell slot to gain a number of melee attacks equal to the spell slot used.