Let's quickly go through the combo and explain why it may be referred to as a "Twin" strategy. With Saheeli Rai on the battlefield, we deploy Felidar Guardian, which blinks Saheeli. Our planeswalker comes back as a new object and can use loyalty abilities again. Saheeli uses her −2 to create a copy of the Cat. The copy enters the battlefield and blinks Saheeli again. She comes back, creates another Cat copy, which blinks her, and the cycle continues. We can do this an arbitrarily large number of times, thus creating, say, twelve million Cats with haste. It all works similarly to the banned Splinter Twin and Deceiver Exarch combo, hence "Twin" in the name.
Interestingly, the latest implementation of the combo within a functional framework takes quite a prison slant. It was rarely seen in the past when it mainly showed up as a win option in an otherwise control-oriented shell. Of course the deck incorporates the most generically good prison piece in Teferi, Time Raveler, who neatly protects our sorcery-speed combo. But now it also features three copies of both Blood Moon and Chalice of the Void. These prison/"cheese" cards can lock some opponents out and win the game straight away. A lot of decks find it problematic to beat an early Chalice into Moon.
The rest of the deck is an assortment of very good cards in these colors. Quadruple Fury and Solitude provide us with free interaction and exhibit the well-known, back-breaking synergy with Ephemerate. Prismatic Ending is our catch-all answer. Expressive Iteration is a stable in any Izzet-based deck and it's no different here. To top it off, we got Seasoned Pyromancer to filter through unwanted interaction or prison pieces.
If you'd like to play an interactive prison strategy with a combo finish, this is the deck for you. I myself wouldn't be able to fight off the urge to scream "Cast Splinter Twin" when placing Felidar Guardian onto the stack.
|Saheeli Twin Prison by 13Atalaya, 20th at Modern Challenge, July 9|
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