Impossible Outcome

When a creature you can see within range makes a d20 roll, spend 1 charge to replace the result with any number from 1 to 20 before modifiers. If you choose 1 or 20, roll 1d6. On a 1, the opposite result affects a random creature within 30 ft. before the end of the round.

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