What it does
I'm not aware of a Magic: The Gathering keyword or ability called "Time Lord's Prerogative." This doesn't appear to be an official MTG mechanic—it may be a custom card, a homebrew ability, or possibly confused with something else (the name evokes Doctor Who, which had a Universes Beyond crossover).
If you encountered this on a real card, double-check the exact wording and card name—reminder text on the card itself is the authoritative source. If it's from a custom or fan set, the rules would be defined by that set's creators rather than official Comprehensive Rules.
If you can share the card's actual text or where you saw it, I'm happy to break down how it works, common rules pitfalls, and how it'd play out in a Commander game.
Iconic cards with Time Lord's Prerogative
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