You must go into Wireless Connection on both Spirit Caller and Nightmare Troubadour
The 1st Edition Base Set from 1999 was the first English-language Pokemon TCG release, the one that started everything
Anathemancer Angrath, the Flame-Chained Anje Falkenrath Awaken the Blood Avatar Ayara, Furnace Queen Bladewing, Deathless Tyrant Blazing Specter Breaking // Entering Carnival Hellsteed Cauldron Dance Chainer, Nightmare Adept Coalstoke Gearhulk Demigod of Revenge Dragonlord Kolaghan Dreadhorde Butcher Dust Stalker Exava, Rakdos Blood Witch Falkenrath Aristocrat Fireblade Artist Forerunner of Slaughter Garna, the Bloodflame Gastal Thrillseeker Grave Upheaval Graywater's Fixer Grub's Command Helbrute Hellhole Rats Hungry for More Igneous Pouncer Junkyard Genius Kardur's Vicious Return Kathari Bomber Kellogg, Dangerous Mind Kolaghan, the Storm's Fury Kragma Warcaller Lagomos, Hand of Hatred Lightning Reaver Lightning Skelemental Lucius the Eternal Macabre Mockery Mishra, Tamer of Mak Fawa Mordor on the March Moria Scavenger Mutinous Massacre Olivia, Crimson Bride Olivia, Mobilized for War Orcus, Prince of Undeath Ozai, the Phoenix King Push // Pull Rakdos Guildmage Rakdos Headliner Rakdos Ragemutt Rakdos Shred-Freak Rankle and Torbran Riveteers Provocateur Rushblade Commander Sauron, the Lidless Eye Shambling Remains Sootstoke Kindler Spike Jester Swift Warkite Sycorax Commander Syrix, Carrier of the Flame The Balrog of Moria The Balrog, Durin's Bane The Beast, Deathless Prince The Dalek Emperor The Nipton Lottery Torrent of Souls Undead Sprinter Wake to Slaughter Zagras, Thief of Heartbeats
as alone it doesn't do much, it synergizes well with it, and it can win you alone the grind game, something that Loading
All of these cards have a 1-in-12 chance of being found in Set Boosters for the upcoming Lost Caverns of Ixalan set, and one is guaranteed to show up in every Collector Booster
