The Wizards Play Network version of the Mystery Booster contains a foil card, pulled from a curated list spanning over forty Magic sets
Up to two target creatures each get +2/+1 until end of turn
We see Jetsam snooping around Ariels cave with the quote We can help you get anything you want, with his accomplice Flotsam physically stealing this spinning armillary sphere looking device with the quote, We know someone who can help you for a price
In general, with 4 different ways to be behind, it should be easy to put yourself in a position to trigger at least 2 of them
Speaking of Harnfel, Horn of Bounty, Change of Fortune is here to help us get value from all the things weve discarded this turn
Bahamut still keeps its two lore counter on it, but: Now it doesn't gain any more lore counters at the start of my first main phase