Bare Knuckle

All you need is two fists and someone to punch.

Level 3: Bare Knuckle

At 3rd level, your unarmed strikes are considered light melee weapons that you are holding and deal damage equal to your str mod + 1d6, increasing to 1d8 at level 4, 1d10 at level 8, 1d12 at level 12, 2d12 at level 16 and 3d12 at level 19.

Level 3: Wrestling

Also at 3rd level, once per turn when you hit a target with your unarmed strike you can attempt to slam the target as part of the same attack, make a grapple check against the target, if they fail they are grappled by you and thrown, landing prone and grappled in a square of your choice within 5ft of you taking damage from your unarmed strike. (normal restrictions apply). If they succeed they are not grappled and thrown but still take the damage.

Level 6: Sparkly Fists

At 6th level, your unarmed strikes count as magical for the purpose of overcoming resistance and immunity to nonmagical attacks and damage.

Level 6: Grappler

Also at 6th level, your movement is not reduced when you have a creature grappled and when you start your turn with a creature grappled you can make an unarmed strike against that creature (no action required).

Level 10: Mighty

At 10th level, whilst raging you are considered one size larger for all checks and saving throws.

Level 14: Best Defence

At 14th level, whenever a creature enters the range of your unarmed strike, or a creature already within the range of you unarmed strike makes an attack, you can use your reaction to make an opportunity attack against that creature.