As you may have noticed from playing Limited, WotC often prints high-power defender creatures at cheap costs that can only attack when certain conditions are met
Perfect in my Keskit, the Flesh Sculptor deck where Im sacrificing multiple artifacts as part of a single activation, then returning them to my hand, ready to be re-cast and sacrificed for value on the following turn
Clear strike-out
Still, they may be difficult to include in formats in a flavorful way
Ex Pokemon Should Not Be This Rare According to the in-app Offering Rates chart for the most recent set, Shining Revelry, you have a 6.664 percent chance to pull an ex Pokemon, and a 0.74 percent chance to pull any specific Pokemon
It plays incredibly well with cards like Paradox Engine, Paradoxical Outcome, and Retract