I kind of messed up the damage rotation on this one, but still pull down 6.8M damage vs Crota. Use this build in order to help some lower DPS friends get through it. Dont forget to use triple arc surges as well!

Exotic Armor:
Stareater Scales

Weapons:
Wardens Law (Adept)
4th Horseman Exotic Shotgun
Golden Tusk Sword