While the goal of the game is to win at any cost, WotC tries its best to maintain balance in games
Sealed products are better for collectors and casual play than for chasing a specific competitive list
Furthermore, according to the item's auction listing on Heritage Auctions' website: Magic: The Gathering Arcane Wizardry Sealed Tribal Deck (Wizards of the Coast, 2017)
In multiplayer games, this inevitability allows you to outlast rivals as they deplete their resources attempting to reset your board
in fact, Tezzeret, the Schemer is the only gold card to make the list (sorry, Renegade Rallier, you were close)
In an aggressive deck, this is likely to be more than enough to kill them off - and that's not accounting for any extra creatures you may have, any ramping you've done or spare mana you've created