Tirion Doesn’t Like the Corrupted Ashbringer
It turns out Tirion Fordring is not happy when you bring the Corrupted Ashbringer to the Icecrown Citadel fight against the Lich King.
What Happens in the Fight
If you regularly solo the Lich King for Invincible’s Reins, especially now during Collector’s Bounty, you probably know Tirion Fordring plays a role during the encounter. Normally, he’s Friendly to players and helps finish the fight.
But if you equip the Corrupted Ashbringer, you will get attacked by Tirion!
Why It Happens
The Corrupted Ashbringer makes the wielder Friendly with the Scarlet Crusade, but Hated by the Argent Dawn/Crusade. And since Tirion is member of the Argent Crusade, he turns hostile and sees you as an enemy.
The Hidden Easter Egg
This rare interaction flips the entire vibe of the Lich King fight, and most players never see it!
Here’s a screenshot of the moment where Tirion attacks the player.

Try It Yourself
If you’re lucky enough to own the Corrupted Ashbringer, it’s worth bringing it to ICC just to see this hidden interaction for yourself.