35 cards where the set is “iko” and the cards have a custom Showcase frame

Archipelagore (Ikoria: Lair of Behemoths #283)
Auspicious Starrix (Ikoria: Lair of Behemoths #294)
Boneyard Lurker (Ikoria: Lair of Behemoths #298)
Brokkos, Apex of Forever (Ikoria: Lair of Behemoths #299)
Cavern Whisperer (Ikoria: Lair of Behemoths #287)
Chittering Harvester (Ikoria: Lair of Behemoths #288)
Cloudpiercer (Ikoria: Lair of Behemoths #291)
Cubwarden (Ikoria: Lair of Behemoths #279)
Dirge Bat (Ikoria: Lair of Behemoths #289)
Dreamtail Heron (Ikoria: Lair of Behemoths #284)
Everquill Phoenix (Ikoria: Lair of Behemoths #292)
Gemrazer (Ikoria: Lair of Behemoths #295)
Glowstone Recluse (Ikoria: Lair of Behemoths #296)
Huntmaster Liger (Ikoria: Lair of Behemoths #280)
Illuna, Apex of Wishes (Ikoria: Lair of Behemoths #300)
Indatha Triome (Ikoria: Lair of Behemoths #309)
Insatiable Hemophage (Ikoria: Lair of Behemoths #290)
Ketria Triome (Ikoria: Lair of Behemoths #310)
Lore Drakkis (Ikoria: Lair of Behemoths #301)
Majestic Auricorn (Ikoria: Lair of Behemoths #281)
Migratory Greathorn (Ikoria: Lair of Behemoths #297)
Necropanther (Ikoria: Lair of Behemoths #302)
Nethroi, Apex of Death (Ikoria: Lair of Behemoths #303)
Parcelbeast (Ikoria: Lair of Behemoths #304)
Porcuparrot (Ikoria: Lair of Behemoths #293)
Pouncing Shoreshark (Ikoria: Lair of Behemoths #285)
Raugrin Triome (Ikoria: Lair of Behemoths #311)
Regal Leosaur (Ikoria: Lair of Behemoths #305)
Savai Triome (Ikoria: Lair of Behemoths #312)
Sea-Dasher Octopus (Ikoria: Lair of Behemoths #286)
Snapdax, Apex of the Hunt (Ikoria: Lair of Behemoths #306)
Trumpeting Gnarr (Ikoria: Lair of Behemoths #307)
Vadrok, Apex of Thunder (Ikoria: Lair of Behemoths #308)
Vulpikeet (Ikoria: Lair of Behemoths #282)
Zagoth Triome (Ikoria: Lair of Behemoths #313)

The arc of my blade has carved a path of light to the end of these results.