Spectral Researcher

Item	Chance	Quantity
Invader's Scourgestone	≈ 35%
Runecloth	≈ 31%	2–4
Pattern: Wicked Leather Armor	≈ 7.2%
Ichor of Undeath	≈ 6.2%
Dried King Bolete	≈ 5%
Morning Glory Dew	≈ 2.6%
Essence of Undeath	≈ 2.4%
Major Healing Potion	≈ 2.2%
Wildheart Belt	≈ 1.5%
Major Mana Potion	≈ 1.1%
Formula: Enchant Weapon - Lifestealing	≈ 0.88%
Thorium Lockbox	≈ 0.33%
Codex: Prayer of Fortitude II	≈ 0.3%
Book: Gift of the Wild II	≈ 0.28%
Star Ruby	≈ 0.17%
Tome of Arcane Brilliance	≈ 0.12%
Aquamarine	≈ 0.1%
Traveler's Backpack	≈ 0.08%
Eight of Portals	≈ 0.06%
Pattern: Runecloth Shoulders	≈ 0.06%
Plans: Radiant Leggings	≈ 0.06%
Recipe: Greater Stoneshield Potion	≈ 0.06%
Schematic: Thorium Shells	≈ 0.06%
Six of Elementals	≈ 0.06%
Pristine Black Diamond	≈ 0.06%
Pattern: Brightcloth Pants	≈ 0.05%

Drops and chances are estimates; not all have been confirmed in the current game. 376 rarer world drops are not listed.