Mystery Boosters contain a whopping 1,670 reprints from across the game's history plus 121 copies of something new and surprisingR&D Playtest cards you won't find anywhere outside of Mystery Booster Convention Edition
Even then, the Cub mostly supports the Craterhoof-style go big or go home plan, which can still get checked by black midrange removal or just a couple of awkward mulligans
Its still the one Id opt for first given so many decks can leverage repeating its effect in different ways
Versus GR Midrange and GR Dinosaurs Decks like GR Midrange or GR Dinosaurs rely a lot on the early mana generation
That, though, is not the only reference to the under the table subgame in Unhinged
Ask anyone what comes to mind first when they think of Ixalan, and 90% of them will tell you one of the creature factions (the other 10% will say Colossal Dreadmaw)