whenever you draw your second card each turn mtg This board state is gonna get out of hand QUICK 🥵 investigate X times whenever you draw your second

The correct build of the deck is still in flux, but you can expect something great to come out soon

But there are a few other cards out there that don't have the "changeling" keyword but whose effect also creates creatures with all creature types: Mutavault, Volatile Claws, Amorphous Axe, Mistform Ultimus, and Runed Stalactite

Professor Onyx also features one of the new mechanics of Strixhaven , magecraft

Of course, this means you need a character on board that can initiate the challenge before Maid Marian gets value, but there are 11 4-cost characters that all have decent Strength values, so it isn't hard to get something down the previous turn that can take the Challenge