mtg card cases Waterproof Trading Case for 550 Cards Includes 20 acid MTG - The Best Card

Springleaf Parade Make Insidious Roots more flexible and create tokens upon entry and you get Springleaf Parade

Play this in decks with four or five colors to bypass difficult casting requirements a common problem the best colorless cards MTG like Chromatic Lantern solve elegantly

Dangerous Wilds Surviving combat is also important to keeping Arthur, Marigold Knight attacking every turn

Although the entire deck is pretty much designed around working with The Thirteenth Doctor, there are so many cards that should generically fit into already-existing decks

Nymris, Oonas Trickster Nymris, Oona's Trickster is a perfect payoff for instant-speed strategies

And you can add a merfolk package and/or slow roll your way to Thassa's Oracle