Headguard of Assimilation

Head equipment — Common

Your Assimilates instead have, "Put target troop randomly into the top five cards of your deck and gain its thresholds. It gets "Deploy - Create a copy of this and put it into your deck.""

Changes: Assimilate
Slot: Head
Rarity: Common
Set: Doombringer
How obtained: Set 9 Chest Loot

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