They are probably going to drop to a very low amount virtually overnight with any sort of removal of the Reserve List coupled with the announcement of more dual lands getting printed somewhere
You get to have perfect information of what your opponent draws over the course of three turns, and if its a monster, you completely deny them their Draw Phase
They are also present in the Yu-Gi-Oh
Blue-Eyed Dragon Rising N1 Prayer of Blue Eyes N3 Mausoleum of White N1 Synchro Rumble R1 Called by the Grave N2 Trap Infinite Impermanence N3 True Light N1 White Dragon's Majesty N1 Shatter of the Holy King SR3 EX Blue-Eyes Spirit Dragon UR1 Blue-Eyes Spirit Dragon N2 Neo Blue-Eyes Ultimate Dragon N1 Snubbull Eyes Tyrant Dragon N1 Red Dragon UR1 Cosmic Blazar Dragon N1 Stardust Sifr Divine Dragon SE1 Baronne de Fleur UR1 Stardust Dragon UR1 Accel Synchro Stardust Dragon SR1 Ancient Fairy Dragon UR1 Blue-eyed Spirit N1 Linkuriboh N1 S:P Little Knight SR1 #GATCHA Deck Item ID: 485838860
Lower Text [Security] You may play 1 [Omekamon] or [Cool Boy] from your hand or trash without paying the cost
Every now and then, Yusei's AI (while it controls "Stardust Dragon") will Special Summon "Level Eater" by decreasing the Level of "Stardust Dragon" by 1, then tune the "Stardust Dragon" with a Level 1 Tuner monster for another "Stardust Dragon"