Dungeons & Dragons 5e Element 133 Class Feature: Exploit Weakness

After 1 round of combat, the hero can designate one opponent and try to find ways to gain an advantage by using brains over brawn. The hero uses an action or spends one action point and makes an Intelligence check (DC 15) with a bonus equal to his or her tier. If the check succeeds, for the rest of the combat the Smart hero uses his or her Intelligence bonus instead of either Strength or Dexterity bonus on attack rolls against that hero as the hero finds ways to outthink his opponent and notices weaknesses in his opponent's fighting style.