Playing the Dark-Dwellers and netting a free, cheap spell on top of a 4/4 menace body is pretty good
Zombies love sacrificing, so sacrifice the Butler for value and get back a creature is also sweet
Steer clear of any set-based Jumpstart products like those affiliated with The Brothers War or Dominaria United, as their power level and card selection is MUCH poorer
Change of Fortune People are skipping over Change of Fortune but it's absolutely a game-winner in specific decks that can properly utilize it: one of the best decks has to be Anje Falkenrath, where you can easily rummage through a huge chunk of your deck for free, then spend 4 mana to cast Change and draw half your deck immediately
Auron and Bartz: Two Legendary Warriors, Two Distinct Strategies These two cards showcase different playstyles that reflect their Final Fantasy origins
Gandalfs Sanction In a spellslinger and/or storm deck, an opponent with a mana elf can just be domed for lethal out of the blue