Web of Chaos epic items

Seal/Shard/Scroll drop locations
From Update 18 release notes:
 * Drop rates for Seals and Shards have been increased for Epic difficulty. The chance for Shards and Seals to drop varies with Epic difficulty:
 * Epic Casual: 5%
 * Epic Normal: 10%
 * Epic Hard: 15%
 * Epic Elite: 25%


 * The drop rate applies to seals and shards separately in Spinner of Shadows, meaning it is possible for both a seal and a shard to drop for the same character.

Items:
 * The base items will continue to drop on all difficulty levels.

Scrolls:
 * Scrolls drop from monster kills in any of the three quests in the Web of Chaos release.

Seals:
 * Seals for the Web of Chaos items are now found in the Epic Chests at the end of the quests.
 * Seals are found in the same quests as their respective base item (e.g. the Envenomed Blade seal is found in the quest where the Envenomed Blade drops - The Lords of Dust)

Shards:
 * Shards for all items in this quest chain are now found in the Epic Chest at the end of the capstone quest The Spinner of Shadows.