Compelled Duel (Ronin)

You force an enemy out into the field, and you sheath your blade. An epic duel is about to begin, one for the scrolls of history. Choose one or two enemies within sight. They are drawn towards you, and have disadvantage attacking anyone other than you. Roll 2d4 every turn this is active. If the nat roll exceeds 4, you gain advantage attacking on the target of the spell. If your nat roll was lower than 4, the target has advantage to attack rolls against you.