Wardens drop Deep Dark Loot.

In the Ask Mojang Caves and Cliffs, they said that the wardens drop no loot because there are loot in the deep dark and your not supposed to kill it. I didn't really like this due to the fact that it's very powerful and I don't like how its kinda a bit forced to not kill the mob. So rather than it having a custom drop, maybe a trophy item. It will drop the same loot table as the deep dark loot chests.