These Emblems are designated by set so only Emblem Tickets from that set can purchase Emblems from that specific set
Joltik Box is still a relatively unsolved deck, and only time will tell if Iron Leaves ex finally gets its time in the spotlight
BT3-072 R Digimon Lv.6 BryweLudramon Color Black Cost 10 DP 12000 Digivolve Cost 1 BlackRed 3 from Lv.5 Form Mega Attribute Data Type Armor/Legend-Arms Card Text 2 [Inherited Effect] Blocker (When an opponent's Digimon attacks, you may suspend this Digimon to force the opponent to attack it instead.) BT3-073 SR Digimon Lv.6 CresGarurumon Color Black Cost 11 DP 11000 Digivolve Cost 1 BlackRed 4 from Lv.5 Form Mega Attribute Data Type Beast Knight Card Text 1 [Effect] Reboot (Unsuspend this Digimon during your opponent's unsuspend phase.) [When Digivolving] Reveal 1 card from the top of your deck for each Digimon your opponent has in play
This design philosophy has undergone a significant shift in the modern era, and now players are often required to utilize the GY as a secondary resource to win, with many cards having effects when they are sent to the graveyard
Decks like this naturally accumulate a lot of lands in play and you need to do that promptly without being run over so there's natural overlap with ramp strategies
Its value comes from age, condition sensitivity, and the difficulty of finding clean early copies in todays market