mtg arena card tracker Deck Untapped.gg - MTG Arena Deck

If these are indeed real, then a possibility of a printing error is not out of the question as to how the leaker got a hold of these cards

Focus on curve, removal, and synergy over complicated combinations

Craft with six artifacts (, Exile this artifact, Exile the six from among other permanents you control and/or cards from your graveyard: Return this card transformed under its owner's control

In fact, Gerard Fabiano (somehow, that name always comes up in my lists) used that exact trick to beat Patrick Sullivan at The Grandest Prix

Maddening Cacophony requires more mana, while Fleet Swallower requires you be able to attack