I'm missing 4th horseman. Think I've had a few monte carlos and I've only ever found one hawkmoon. But same with Gally only ever found one, same with thunderlord, same with no land beyond, never found a suros used xur, only ever one red death, one hard light, one TLW. Just the way it works. I find multiple exotic armors, very few weapons I've gotten multiple of. Not going to complain I'm missing 4th horseman.