As with Yeong-Hao Han's Forest from Hour of Devastation , its the lack of a dense, lush forest (along with the gritty palette of rust, sand, and dusty sepia) that shows the sort of radiated wasteland that Fallout is
The X in the casting cost applies to damage and the number of creatures you target, giving you the flexibility to wipe a board however you want while leaving behind a powerful Enchantment
If you can't choose a new legal target, then it remains unchanged (even if the current target is illegal)
A city-wide skyscraper needs a suitable frame to represent that, which is why the Skyscraper frames are pretty great
The face commander Leinore, Autum Sovereign came with the new Coven mechanic which seems pretty limited and self-balanced as it only triggers once at the beginning of combat, so unless people slot additional combat steps or trigger copying cards, this felt inherently less potentially broken than Wilhelt
This version from the Fabled set has five for its cost, attack and resist values