others favour particular game mechanics - pulling cards out of your graveyard, for instance, or stealing your opponents' best tools
Not to mention Perrin has a pretty helpful effect making her likely to see some play in decks like Lugia VSTAR that need specific Pokemon in play for them to work
Officious Interrogation is, well
Sorcery Group Reanimate (CTRL to add secondary) Keep Demons Keep Demons (CTRL to add secondary) Keep Discard Currency Converter Whenever you discard a card, you may exile that card from your graveyard
It can also be 6/6 creature for only 4 mana once you have enough cards in the graveyard, with the ability to repeat its strong effect once it re-enters the battlefield and each time it attacks
The attack trigger is and always has been largely forgettable, but five artifacts for 7 mana is exactly what some decks want