Sicken simply allows you to turn your dead spell into something else random for a tempo cost
"The latest version of Forge doesn't have any Innistrad cards
If they were made anywhere else, they would not be included, but since they are created by Maro himself, and they are used in an official tournament, they can truly be classified as Magic Rarities
Regarding the legality of the cards: Magic: The GatheringFINAL FANTASY (FIN) is a Standard-legal set Magic: The GatheringFINAL FANTASY Commander (FIC) and FINAL FANTASY Through the Ages (FCA) are Commander-, Legacy-, and Vintage-legal sets, and individual cards are also legal where already available in other formats Magic: The Gathering FINAL FANTASY Play Boosters contain cards from FIN and FCA
That's all without crediting how good Atraxa is as a standalone (flyalone?) creature
Then I used those types for removal of stuff like Dispeller's Capsule, Duplicant, and Seal of Doom