At my LGS's we used to play big group games with 60+ card decks on certain days of the week and on Friday nights
Cards like Grateful Apparition, Karn's Bastion, and Vraska, Betrayal's Sting turn a single experience counter into a dozen
I simply think this is just due to creatures becoming much more powerful in recent times its difficult to justify playing multiple copies of Snapcaster Mage when you could instead be playing Ragavan, Nimble Pilferer or Murktide Regent
Boromir, Warden of the Tower Boromir, Warden of the Tower is Boromir at its best, protecting others, and being an upstanding, though flawed human soldier
Alexios, Deimos of Kosmos Top Five Time
At a bare minimum, you can turn your 1/1 token into a card every turn for just two mana, but Dockside Chef starts taking over games when it triggers Oni-Cult Anvil using additional fodder