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How about a card that takes the 15-20 power you've accumulated on board, jumps it all into the air, and doubles your damage output closer to 30-40 damage instead

I not only spent time researching what cards needed to get swapped in and out during certain matchups, based on other people's experiences with the deck, but I also made myself a quick-reference sheet that I could use the whole weekend to guide me on my sideboard process during matches

A fantastic role-player which I could definitely see sneaking into Pauper, or the right Commander deck

Xantcha, Sleeper Agent is a neat addition to the list, as she has an activated ability that will let any player pay 3 mana, draw a card, and cause Xantcha's controller to lose two life