Players who complete the Abscess once per day will earn gold, Dreadnought ore, tier 9 feed, and TERA reward points. The 22nd Dreadspire floor also has some new rewards, while the Bellicarium and Killing Spree stores have new crafting materials available. It’s a bunch of new stuff available for a limited time, so you would do well to take advantage of this now, while you can. Although some apprehension about an abscess is understandable.
TERA, you could at least get a whole pile of rewards for doing so, which is exactly what’s going on with a new limited-time event in the game.
Source: Official Site