Tolarian Terror comes with ward as well, making an already hard creature to remove that much harder
Displaced Dinosaurs makes every artifact token you make (Treasure, Clues, and Food come to mind) into 7/7 creatures, and its not hard to make a ton of artifact tokens these days, whether Treasure in Golgari or Clues in Simic
Another classic Pokmon from the original 151, Psyduck has remained popular ever since being introduced in the first Pokmon Game Boy games
Amulet of Quoz For those newer to the game, there was a way to play MTG in the 90s including ante (players would bet a card from their deck before the game starts, and whoever wins get all the ante cards)
It can pull double-duty as Mega Charizard Y or Mega Charizard X in normal raids
So this was pretty far removed from playing with Magic cards