Quinary Gems

Trinket equipment — Rare

Your Exalted Professors instead have, "Diligence - Create a random action you meet the threshold requirements to play and put it into your hand. It gets "When a Mage enters play under your control, this gets cost - in all zones.""

Changes: Exalted Professor
Slot: Trinket
Rarity: Rare
Set: Scars of War
How obtained: Set 6 Chest Loot

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