Marcy: An odd card because you normally would want to keep eating cards out of graveyards to build up reanimated monsters, but you have to do it on the turn it was put there, and then when you do, you lose any others you had
As for monsters to add to the extra: Abyss Dweller (is great in some matchups for the Graveyard shutdown) Castel the Avian Skyblaster (1/turn Book of Moon effect or a single spin-into-the-Deck effect is great) Daigusto Emeral (Mini Pot of Avarice + free Special Summoning is incredible) Caingorgorm is also pretty cool against a few random things like Pleiades or Compulsory Evacuation Device
4 Number 7 Might Yield a Potent Effect Galactic Overlord May 8, 2012 Number 7: Lucky Straight is usually terrible among generic Rank 7 Xyz Monsters, especially since it requires three materials
Hidden Cove and Rapunzel also add to the Will Power of your characters, which will come in handy so you can keep them around long enough to make an impact
Pulling any SP, Comic Parallel, or Anniversary card from a single box is statistically unlikely these are carton-level pulls