Why go to Black Garden for Hydra kills when you can get your Hydra kills from Patrol Mars at the Vex Gate? They spawn regularly with Minotaurs every few minuets, and you don't have to kill yourself. And for Ogre Kills Patrol Moon the go to the Temple of Crota. The Ogre always respawns, and if you get "Troll Patrol" mission, you get two for one.