You might also add in Memnarch, which while not a Myr, pairs up with infinite blue mana to steal everything on the battlefield, often giving you a victory through the table scooping
Lillie's been carrying premiums since Sun & Moon, and a Saito SIR with her front and center moves the moment people see it
Open the Graves $0.99 Ill probably throw one of these in my Zombie Commander deck, but the value isnt all the great even in a casual format unless the creature type of the tokens matters for you
And even if you already have a few cards in hand, playing Oak at the right time will almost always change the entire complexion of your game
The Walking Dead set of cards was originally released as a part of a timed-exclusive Secret Lair, and remained the only way to get them until Wilds Of Eldraine almost three years later, where they were reprinted with in-universe Magic characters in Magic settings
Sphinx Summoner Ah yes, the heavily reprinted Sphinx Summoner