Tides of fate

One creature you select within range makes a Wisdom saving throw, which they can choose to fail. On a failure both of your fates are Entangled, allowing them to Ebb and Flow.

Ebb: You are granted Advantage on either Skill Checks, Attack Rolls, or Saving Throws. Your Entangled has disadvantage on the same.

Flow: You roll either Skill Checks, Attack Rolls, or Saving Throws at disadvantage, granting your Entangled advantage on the same.

The Entangled is allowed to remake their save at the end of their turn.