As a character, she is Miguels AI companion, and in Magic: The Gathering , she perfectly accompanies the Spider-Man 2099 card
They created silly moments and allowed players to get creative and make their own jokes, but the more impactful, mechanically relevant stickers were the ability and power/toughness stickers, which allowed you to permanently alter a creature
Pale Bears and Balduvian Bears
You can't flip them in Shiko decks, if you are making token copies of them, but I think getting their ETB abilities when they come into play is enough value
-3: Return target creature card from your graveyard to the battlefield
Nowadays, cards have so much baked-in inevitability that it's hard for Control decks to catch up