Playing alone against three other players is an uphill battle, so you have your trusty evil scheme deck by your side to help you
(To be fair, Cawblade wasn't a true control deck, but it did fall into that role sometimes.) Planeswalkers generally tend to have very powerful abilities that can go a long way toward helping you gain control of the game
You can keep looping powerful abilities every turn cycle without ever losing your board
Its a lot compared to many cards, but its incredible value when you start to look at what the Little Mermaid villain is capable of bringing to your Amethyst deck
Listings are abundant, and youll see auctions daily
Three of them cost seven mana, which is in the realm of game-winning effects, and the other two are huge X spells