I've found quite a good way of using 3 of coins
Get to the end of caydes stash, the boss is an ultra. So will drop am engram. Don't scan the box and go to orbit. When you go back to the mission it will start straight at the boss spawn.
I go do other stuff with a 3oc active then after a while will go back kill the shade and see if an engram drops. Seems to drop one quite often.
It's quicker than other things I've tried and you don't have to make sure you go to orbit before a certain time like gate lord
Get to the end of caydes stash, the boss is an ultra. So will drop am engram. Don't scan the box and go to orbit. When you go back to the mission it will start straight at the boss spawn.
I go do other stuff with a 3oc active then after a while will go back kill the shade and see if an engram drops. Seems to drop one quite often.
It's quicker than other things I've tried and you don't have to make sure you go to orbit before a certain time like gate lord