This is the 43rd original hero concept.

Enjoy :)

[ S1 - Backtrack ]
Increase an enemy's Combat Readiness by 50%, before attacking the target and decrease its Combat Readiness by 50%.
Ignores Effect Resistance.

[ S2 - Backstab ] CD: Passive
The caster deals 30% extra damage and receives 30% reduced damage against the highest Combat Readiness enemy.

[ S3 - Vulnerability ] CD: 7 Turns
Attack an enemy.
If the target has the highest Defense among all enemies, Penetrate its defense.
Decrease cooldown by 1 turn for each living enemy after using this skill.

Note:
To optimize S3, player needs to guess which enemy has the highest defense.
Unless it's super obvious like the enemy has only one Defense scaling hero, most of the time, it's quite uncertain.
Two tanky warriors/knights. Which one has the higher defense?

The decrease cooldown effect accelerates S3 when the player gusses wrong, and slows it down when guesses right.

S1 helps trigger S2 damage boost, as well as pushing enemy back to 50% CR.

Comments are welcomed.