Whenever they deal combat damage to a player, you get to create a Treasure token and exile the top card of their library
All that benefit already on a 4/4 flying dragon body

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Oskar doesnt have a discard outlet of his own, and so youll need a bit more setup to make him good, but there are a lot of graveyard decks out there that could benefit from this
Once you start playing with any of these cards, youll easily be able to take down your opponent in any match
The trade-in guarantee caps downside at $45 loss, making this a reasonable gamble even if you want to open packs