Ultros, Obnoxious Octopus The difficulty with casting 4-mana noncreature spells is that they often dont affect the board, and that can cause you to fall too far behind your opponent, especially when theyre aggressive
An EDH deck built around the flavor of the Cthulhu mythos
Most cards have muted colors, especially in the background
Cards that "represent negative play patterns and interactions that you generally shouldn't spring on unsuspecting opponents", and which would probably be banned if uncards were made legal
This is significant because black has a ton of effects that allow you to pay one life to draw a card, so having Sheoldred, the Apocalypse in play means that you'll start gaining instead of losing life in exchange for more cards
The time lord rogue gets stronger every time a creature with skulk deals combat damage to an opponent