For four mana, you get a Black, Red and Green 3/3 with haste that allows you to create a tapped treasure token whenever a creature with haste attacks
It also applies to other cards like fetch lands and pretty much everything that should go to the graveyard after it's used
Rather than being cards that changed during gameplay, these were cards that gave you a choice in the hand
Healing Salve was the worst on this list, as gaining or preventing three life is not as good as, say producing three mana, just outright making your creature +3/+3, killing a creature/dealing damage, or drawing three cards
The goal is to enjoy multiple shiny patterns, complete Pokmon sets, compare finishes and build beautiful binder pages
Sleep is Paralyze, except sturdier