Patren Patren. Simply because you can benefit from this dungeon. It's easy to level up in the dungeon, since you're in there for 30 minutes at most. At level 10X, I was going through 3 to 4 bars per run. What was the best part? The fact that I did not need a card to run it. The dungeon is absolutely free, just do all your story quests up to 98 to do it. You face a few bosses, and they drop osmium items, slotted or not. Occasionally, you'll get Epaulets, which are nice. Anything else?