Trick trades Gleipnir, a dwarf-made superstrong chain. In Norse mythology Gleipnir binds Fenrir, the wolf monster who will break free at Ragnarok and kill Odin.
Trick gets the secret ingredient for colcannon. This very traditional Irish staple is mashed potatoes made with scallions, lots of cream and butter, and shredded cabbage or kale.
Julian Richings who plays Death (one of the four horsemen of the apocalypse) on Supernatural is in this episode. He is the guy who Trick trades with. He also played the ferryman who led Percy Jackson and his friends across the river styx to see Hades in the first Percy Jackson movie.
This story establishes that while Bo's touch-seduction ability works on both sexes it is only effective if the target is attracted to females on some level as she has no effect on a homosexual male security guard.