Blast from the Past and Old Fogey were both printed with the classic border and featured mechanics long since taken out to pasture (Old Fogey was the first dinosaur creature card, a type reintroduced in Ixalan )
Paying three mana to both draw a card and counter an activated or triggered ability is outstanding
And the regular version of Sorin, Imperious Bloodlord is valued at around $29
I also recently had a cool game in Legacy where my opponent had a Sanctum of Prelate on one and a Thalia, Guardian of Thraben in play, while I had a Dress Down and Swords to Plowshares in hand with five lands in play including a fetchland
I would rank the Wizard deck last, yet it could grow on me after I go through all the cards
Being able to pick up the basic black and white magic spells on multiple characters is also quite the boon, as early random encounters One point that might sway people is that the Standard Grid has more nodes overall