Chitinous Gloves

Gloves equipment — Rare

Your Dream Spiders instead have, "When a Spider you control deals damage to an opposing champion, bury cards from the top of each opposing champion's deck until you bury a troop."

Changes: Dream Spider
Slot: Gloves
Rarity: Rare
Set: Campaign: Chapter 1
How obtained: Tranquil Dream Pack

What it does is the game's own text; how it was obtained is from the owner's records.