Blink effects like Conjurer's Closet and Thassa, Deep-Dwelling give you continued value and ability to control what stays and goes in your opponents graveyard
Soul of Theros Soul of Theros requires a lot of mana to give all your creatures lifelink, but its not a 6-mana do-nothing enchantment
2 Trainer Promo was only handed out at the Pokemon World Championships held in California
Most games will be spent bouncing between these two abilities, drawing into legendary lords like Arvad, the Cursed or whatever flavor of Akroma/Avacyn youre drawn to
Standard was the most popular format of Magic for the last 25 years, through its ups and downs, and now most players want nothing to do with it
Because similar to a commander in EDH, you can always count on having it available without having to draw it, which is very powerful