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The Master of Keys The Master of Keys is a cellarspawn who is able to use the House's doors as thresholds not just between adjacent rooms but unconnected rooms as well

Arcane Signet and six lands that clearly aren't from Spider-Man, but the alternative would have been a deck that would likely never cast its commander

As well, it can be a bomb against Auras

This card only gets better in a world with Paradox Engine

The Lorcana players would refer to a group of Lorcana players

Mark Rosewater has mentioned it sits at about a 7 on the Storm Scale, which means that it's unlikely it'll return even if it's not impossible