Base Class: Barbarian
It's for him
'Roid Rage
You can channel divine power into your strikes. On each of your turns while your Rage is active, the first creature you hit with a weapon or an Unarmed Strike takes extra damage equal to 1d6 plus half your Barbarian level (round down). The extra dam age is Necrotic or Radiant; you choose the type each time you deal the damage.
Never Felt so Good
Your drugs ensure you can continue the fight. You have a pool of four d12s that you can spend to heal yourself. As a Bonus Action, you can expend dice from the pool, roll them, and regain a number of Hit Points equal to the roll's total. Your pool regains all expended dice when you finish a Long Rest. The pool's maximum number of dice increases by one when you reach Barbarian levels 6 (5 dice), 12 (6 dice), and 17 (7 dice).
Singular Focus
Once per active Rage, if you fail a saving throw, you can reroll it with a bonus equal to your Rage Damage bonus, and you must use the new roll.
Hypeman
As a Bonus Action, you unleash a battle cry infused with divine energy. Up to ten other creatures of your choice within 60 feet of you gain Advantage on attack rolls and saving throws until the start of your next turn. Once you use this feature, you can't use it again until you finish a Long Rest unless you expend a use of your Rage (no action required} to restore your use of it.
Feeling the High
When you activate your Rage, you can assume the form of a divine warrior. This form lasts for 1 minute or until you drop to 0 Hit Points. Once you use this feature, you can't do so again until you finish a Long Rest. While in this form, you gain the benefits below. Flight. You have a Fly Speed equal to your Speed and can hover.