Because it was never part of a commercial set, it represents a rare piece of Pokmon TCG history
Astarion, The Decadent A Temptation To Be Sure This guy knows exactly how seductive the life of a Vampire is and as a commander, Astarion, the Decadent helps keep your life total high by drinking deep in the carnage of the battlefield
PSE Prismatic Secret Rare Red-Eyes Zombie Dragon Lord X DARK Level 10 [ ZombieSynchroEffect ] ATK 2800 DEF 2400 1 Zombie Tuner + 1+ non-Tuner monsters During your opponent's turn (Quick Effect): You can target 1 Zombie monster in your GY, except "Red-Eyes Zombie Dragon Lord"
These include Sigardas Aid as Captain Americas Aid, Flawless Maneuver, In the Trenches, and Sword of War and Peace as Shield of War and Peace
Not just collectors either: casual fans returned sports card collectors crossed over parents started collecting with their kids sealed investors entered the space heavily social media hype exploded again The market then pulled back slightly again over about 8 months and then bang
