Like most Magic: The Gathering cards, the value of Cemetery Prowler depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Innistrad: Crimson Vow)
The aesthetic of cards in the Yu-Gi-Oh
After millennia to craft victory, Bolas had eternity to contemplate defeat
Sure Ancestral Mask is good, but Idolized includes everything from treasures to creatures to who knows what else, for a mana less
Apple of Eden, Isu Relic The Apple is notably very difficult to use for webcam Commander play like Spelltable, but I love these sorts of cards for in-person Commander, since they scale so nicely with whatever power level your pod is playing
Which is all well and good, except one thing: R&D has it's own little sub-rules about this: A Creatures come before non-creatures