Vex : Venus citadel Cabal: near where you start the dust palace strike. Where you go in to scan for buried city mission on Mars. You usually get two major cabals upstairs and one spawns downstairs. This is in the two story building. Hive: you can use cosmodrome. A soon as you spawn you will see a shack up ahead to your left. Go down and three majors spawn. Run upstairs, wait a minute and head back. Fallen: on Venus. As soon d you spawn head left and keep going until you reach I think the cliffs. You have a level 14 major drug that always spawns there. You get one reaver vandals that spawns on a hill parallel to the dreg.