Therion

This is my attempt to adapt Therion the thief from Octopath Traveler into D&D 5e.

Wildfire

You gain the fire bolt cantrip.

HP Thief

When you take the attack action, you may make two attacks and steal HP equivalent to the damage dealt but you must make both attacks against the same foe. You can use this ability a number of times equal to your proficiency bonus.

Shackle Foe

Pick a single foe that you can see within 30 feet and reduce their physical attack damage by 2d6 for 2 rounds. You can use this ability a number of times equal to your proficiency bonus. This ability cannot stack.

Fleetfoot

You gain a bonus to your initiative modifier equal to your proficiency bonus.

Armor Corrosive

As an action you can pick a single foe that you can see within 30 feet and reduce their AC by 2 for 2 rounds. You can use this ability a number of times equal to your proficiency bonus. This ability cannot stack.

Incidental Attack

If you use the abilities Shackle Foe or Armor Corrosive on a foe within melee range, you may make a single attack on the same foe as a free action.

Aeber's Reckoning

Range: 30 feet

Components: a melee finesse weapon worth at least 1 sp

Effect: You flourish the weapon used in the casting and then vanish to strike like the wind. Choose up to five creatures you can see within range. Make a melee attack against each target using a weapon of your choice. On a hit, a target takes 6d10 force damage and you may add both your initiative bonus, and your normal weapon damage bonus to the damage rolls

You can then teleport to an unoccupied space you can see within 5 feet of one of the targets you hit or missed.