Alternate Outcome

You gain the ability to change the results of any action. You pull from an alternate timeline to bend your own just slightly, though you cannot control which timeline you get your new result from. One action, bonus action, saving throw, or ability check of your choice must be re-rolled once determined the outcome. The new roll must be taken, even if it is worse than the original, or better, when used on an enemy. Time warps to accommodate the new outcome, and only the caster remembers the original outcome.