Tentacles
Use Tentacles of Q'bthulhu to randomize the 3rd and 4th stats on your equipment.
Legendary Tome: Ropey Readings
Accumulates experience as you do. When fully charged it produces 20 Tentacles of Q'bthulhu
Cultivated Tentacle of Q'bthulhu Seed
Alchemy Plant
After this plant is fully grown it can be watered and harvested for Tentacles of Q'bthulhu until it withers.
Produces 20 Tentacles of Q'bthulhu when fully charged. Legendary Tomes can only be charged once a week. Charges in Dungeons, Geode Caves, and Delves. Obtainable from the Shadowy Market in the Shadow Tower.