Here’s my basic guide for Moira with tips that apply into Masters.
-When you deal damage, prioritize biotic grasp, not damage orbs.
-When you heal, use heal orbs first and biotic grasp if needed.
-Always throw out an orb before you ult.
-Try not to use fade as mobility. In a lot of cases, saving a couple seconds walking isn’t as important as having fade available when you’re in danger as an escape.
-Don’t use Damage Orbs for poke damage if you already have Coalescence. It actually helps the enemies.
-Tap teammates with biotic grasp for the lingering heal effect if they’re not taking a lot of damage. It saves resource.