The idea of using Ho-Oh as an accelerator in non-Ho-Oh decks was a radical one, but ended up with some high placements at the Regional level
With just 2 mana and a tap, you can put any artifact from your graveyard on top of your library
Spoilers: At the end of the Tarkir: Dragonstorm story, it was revealed that Jace visited Ugin and Bolas in the Meditation Realm, and the events there made the whole realm break into fragments
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From this perspective, you should buy every Secret Lair drop, whether you actually want it or not, knowing that you'll basically break even most of the time, while not-that-infrequently, you'll hit an above-average drop and double your money
The catch in this situation is that your opponents each get a card and a Rabbit too, which is hardly ideal