Law of Me

For the duration, your personal reality becomes slightly sovereign. Choose one rule: you ignore difficult terrain, you cannot be knocked prone, you can breathe anything, you can stand on any surface, or your ranged power attacks ignore non-Artifact cover. You may change the chosen rule as a bonus action.

This power has its own stable page so it can be linked from any character, item, location, story post, bargain, curse, or future reward.