These purr-fect pals can be played in a range of MTG formats, but all of them will slot nicely into an MTG Commander deck
A Brief History of the Archetype First and foremost, some background: Polymorph, from which half of these strategies derive their name, was first printed in 1996's Mirage, and allowed savvy deckbuilders to swap between creatures in a semi-random manner, by pivoting between what existed on your battlefield, and what creature(s) lurked near the top of your library
Energy Energy determines which cards you can play
Ill give 2019 Kristen credit for one thing, though, and thats her being ahead of the curve on identifying that its more correct for aggressive decks to ramp by attacking than by playing mana rocks
Bringing the Thunder, Part 2 Mark continues his card-by-card stories from the design of Outlaws of Thunder Junction