Mister Sinister is a MARVEL SNAP card that costs 2 energy and has 2 power. It has the effect: "On Reveal: Add a Sinister Clone here with the same Power."
It has variants that are part of the Pixel, Baby, Sinister London, Luca Claretti, Phoenix, Volmi, Dan Hipp, Jim Lee, Venomized and X-Men '97 categories.
Mister Sinister has synergy with Brood, Blue Marvel, Mystique, Patriot and Squirrel Girl.