The current answer

No collected source proves where a Legendary Horadric Seal currently drops. The Blizzard forum thread shows that players are asking about six-slot seals, but a question about an item is not a verified drop table.

The selected YouTube video is explicitly a Season 14 Mythic Horadric Seal farm. It is useful for terminology and route discovery, but it is not comparable evidence for Season 15 acquisition.

Separate the item questions

First identify the acquisition activity, then inspect the item itself. Slot count, combining, rerolling, and selling are separate mechanics; conflicting community explanations cannot be merged into one rule.

If two players report different slot behavior, record the character realm, season, activity, and item tooltip before deciding whether they are describing different seal types or different versions.

Safe verification steps

1. Open the current item tooltip and record the exact item name and any slot text.

2. Record the activity and chest, boss, or reward screen that produced it; do not rely on a remembered route.

3. Check whether the current client exposes a combine or reroll action and what it consumes.

4. Repeat the observation on the same realm and season before calling it a farm method.

  • Capture the source activity
  • Keep slot and reroll separate
  • Repeat before generalizing

Common traps

Do not copy a “six-slot” claim as a probability, guaranteed drop, or trade price. The collected material contains player uncertainty rather than a confirmed distribution.

Do not treat a Season 14 route as current simply because the video has a complete transcript. The version label changes whether the route is comparable.

Needs confirmation

The current drop source, slot generation, reroll rules, combining behavior, and season-boundary behavior all need a first-party source or live capture.

Until that evidence exists, the most useful page is a verification boundary, not a fabricated guaranteed farm guide.