Unyielding Disguise

When you cast Humanoid Form or Illusory Disguise to alter your appearance, the spell's duration is 2 hours. At the end of the duration, you can extend the spell's duration for another hour, but doing so is taxing, making you Drained 1. You can keep extending it in this way, increasing your drained condition by 1 each time, to a maximum duration of 6 hours.