Talk:Necromancer/@comment-88.104.217.245-20130706233151/@comment-1321146-20130707043343

They were fast enough to complete the Chapters that awarded the Treasure Items for the card before the Chapters were removed from the game shortly after.

As with any other Treasure Items, once you've completed the set, the items will drop for you from The Treasure Trove and other quests that award random Treasure Items.

Why did the quests get removed? We don't know. Maybe they weren't quite ready yet, maybe the cards weren't meant to be tradable (they were, unlike the earlier Dragon Treasure cards - which begs the question: Why not make them untradable and then open the quests again), maybe they thought they needed the Treasure Sets for later events instead, or maybe they simply decided that 24 Chapters was enough, and players should/would focus on Events after that.

It's all speculation. No official explanation was ever given.