When it enters the battlefield, you may search your library for a card named The Underworld Cookbook, reveal it, and put it into your hand, then shuffle
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(A signed card is a card signed by its artist, designer, or someone else its strongly associated with.) Discard a signed card: Destroy target creature with a name that has a five or fewer letter length difference from the person who signed the discarded card
Speaking of, you can try to take advanatge of that symmetry in other ways like playing Azorius First-Wing as an unblockable griffin, assuming you don't mind going into blue
Warren Soultrader Eliana: This is a very predictable pick from me, and it is easy to see why