An all-time favorite for my group is the infamous Winter Orb, a card that can easily slot into any aggro deck (thanks to its being colorless) and really throw an opponent off
During a virtual press event for Tarkir: Dragonstorm last month, Wizards noted that "because this is a 'return to' set, theres a lot of nostalgia for Magic players, and Wizards felt like they needed to deliver on fan expectations ." With a set as massive as Dragonstorm with so many different ways to add to the collectibility of the game, it certainly seems like Wizards has delivered.
However, very often if you use a real removal spell on Orcish Bowmasters, your opponent has gotten a token and a damage worth of value, making it extremely difficult to trade profitably
Pinging effects like Agate Instigator, Manabarbs, and Roiling Vortex add up on their own
Even this downside can be turned into an upside in our hands, as most aristocrat decks will be running some kind of reanimation/recursion package to get back things they sacrifice
Magic can be a very expensive hobby, especially if youre playing formats with older cards that could be on the Reserved List