# Im not sure if you need a dlc for it but you can grind those exotics through legendary lost sectors you just have to wait until the exotic is legs it changes everyday
# I believe it was from season of the lost, which was during the beyond light year. So you will need that dlc.
# You can do the legend lost sector on leg day, or look out for the vex incursion zone on neomuna. That gives exotics on a knock out system as well.
plain trench
unborn whale
ocean imp
robust spire