On the top end, Xenk, Paladin Unbroken is the most expensive card from this Secret Lair at $47
The Charizard holographic card, in particular, has become a holy grail for collectors, often selling for tens of thousands of dollars in perfect condition
This matters if you ever decide to sell, since condition dramatically affects value
2 Clefairy: Dream League (Japanese Sun & Moon Promo) $334.01 An Elusive Promo This Promo is Japanese-exclusive and does not have an English print
Technomancer is the workhorse: it enters, mills three, and returns any number of artifact creatures with total mana value six or less straight to the battlefield, so one card can rebuild half a board
Many Tellar players have stuck with the Mirror Force mentality, and do you know how great it feels to resolve a Royal Decree against them