So, I heard about cave farming. I saw a guy doing it, and I needed one Strange Coin, so I decided to join him. Got two legendary engrams in 5 minutes, one was a legendary sniper (FINAL BOSS) and the other was a Strange Coin, so I got me an exotic. I'm never farming again, BUT After those 5 minutes were up, we got swarmed! It wasn't a public event- there were Ultra/Major Fallen (6+ reaver captains, full squads, elder Servitors, Noble shanks galore) and TONS of Hive, Hallwoed Knights, Ultra Wizards- we got -blam-ed! It was HILARIOUS. So, fair warning to you farmers. Your crops can strike back.