Path of the Elite Warrior

This is a subclass designed around comboing enemies, stunning them, and just overall being really cool in a battlefield.

Rising Combo

Attacking with a weapon will apply a rising combo that will end in a devastating strike. If you manage to hit 5 attacks in a row without missing any of them, then the 5th hit will become a critical hit, even if the final hit is not a natural 20. If you miss an attack roll, the combo resets. Additionally, the 3rd, 4th, and 5th hits give a bonus to their attack rolls shown here:

1st attack: No bonus

2nd attack: No bonus

3rd attack: +1 to attack roll

4th attack: +2 to attack roll

5th attack: +3 to attack roll and hit becomes critical hit

If you get a natural 20 critical hit during the combo, it will count as 2 hits towards the combo. Once you get a critical hit from the 5th hit, the combo will reset. 

Staggering Strike

Beginning at 6th level, when you hit with an attack roll with a weapon, you can perform a Staggering Strike. When you use this ability, and the target creature is size Large or smaller, it must make a constitution saving throw (dc=8+your proficiency bonus+ your strength modifier.) On a failed save, that creature is stunned until the end of your next turn.

You can only use this ability twice per long rest.

Natural Resistance

Beginning at 10th level, when you take damage, you can use your reaction to expend one of your hit dice to reduce the damage you take. Roll the hit die and whatever number you get is reduced from the damage taken. You can take a minimum of 1 damage using this ability.

You can only use a maximum of 4 hit dice for this ability per long rest. 

Poison Boost

You have mastered the ability to resist poison, and now you are able to use its effects to you own benefit. You have resistance to poison damage, and the poisoned condition does not give disadvantage on attack rolls while raging. While you are affected by the poisoned condition, you gain the following effects:

You can use your bonus action to make an attack with a weapon

Your movement speed is increased by 10

You have disadvantage on constitution saving throws to end the poison, and if you succeed on a constitution saving throw to end the poison, you can choose to take a -5 penalty to the saving throw, potentially turning it into a fail

You have advantage on constitution saving throws against everything except poison/poisoned condition

These effects end when you are no longer affected by the poisoned condition. If you are raging while poisoned, your rage cannot end unless you are dropped to 0 hp or the poisoned condition ends.