Credit: Wizards of the Coast Ulamog, the Defiler Marcy: I love how just bonkers powerful this card really is, like your opponent is likely to just scoop to losing half of their library, but then they also have to deal with something that will otherwise very likely wipe out every permanent they control when it swings, and also one shot them
As such, rather than just using the non-foil price with a multiplier, we're going to use SCG preorder prices for foils, with the standard 15% deduction
This also means that rather than trying to design a legendary creature of your own making, Id suggest trying to find an existing character from Magic or outside of it that you can lean into to draw the flavor from
4.2 Unauthorised reproduction, distribution, or possession of copyrighted or trademarked materials is strictly prohibited
According to many, including Edh.ghost, this is about highlighting the threats of opponents while downplaying your own