Ancient Pattern: Helm of Lingering Power

This recipe is one of eight recipes listed in both this guide: [url=/news/how-to-enter-old-scholomance-farm-once-removed-transmog-items-333981]How to Enter Old Scholomance - Farm Once-Removed Transmog Items[/url] and this guide: [url=/news/crafting-ancient-naxxramas-weapon-and-armor-transmogs-334078]Crafting Ancient Naxxramas Weapon and Armor Transmogs[/url]. Once you've unlocked access to receiving [url=/item=206374]Invader Scourge Stones (ISS)[/url] and [url=/item=206375]Corruptor Scourge Stones (CSS)[/url] in [url=/zone=6066/scholomance]Old Scholomance[/url], [url=/zone=2017/stratholme]Stratholme[/url] and [url=/zone=3456]Naxxramas[/url], you can then convert these to either [url=https://www.wowhead.com/item=12844/argent-dawn-valor-token]Argent Dawn Valor Tokens (ADVT)[/url] or [url=/item=206576]Death's Bargaining Chips (DBC)[/url]. Talk to [url=/npc=11039]Duke Nicholas Zverenhov[/url] in Light's Hope Chapel to convert to [url=https://www.wowhead.com/item=12844/argent-dawn-valor-token]ADVTs[/url] and you talk to [url=/npc=206572/zackett-skullsmash]Zackett Skullsmash[/url] in the inner ring inside Naxxramus to convert to [url=/item=206576]DBCs[/url]. You then use 6 ADVTs or 12 DBCs to purchase [url=/item=206584]Archived Crafting Techniques[/url] from [url=/npc=11536]Quartermaster Miranda Breechblock[/url] in Light's Hope Chapel or a [url=/item=206577]Slime-Covered Scroll[/url] from Zackett Skullsmash inside Naxxramas. Here's the confusing part about this pattern. Both guides list this pattern with the associated cost. I'm not sure if it DOES drop from both purchased items, but the conversion to ADVTs is a much better bargain than converting to DBCs. If anyone can confirm if this recipe only drops from Archived Crafting Techniques, then the guide for the Naxxramas recipes should be updated accordingly.