Take notice of when an enemy is marked by Corvus, as they will receive healing at any distance any time Corvus heals. Corvus's heal is also more effective when used directly on marked targets, so attack unmarked enemies to force him to shift focus.
Try to keep track of Androxus ult, particularly when your ult is either ready or active, as Andro can burst all his ult shots on you to kill you and/or destroy your drones.
Try to wait until after Terminus uses his ult to use yours on him. If you Dragon Punch before he ults, he'll just come back to life and you'll be at risk of being in the blast.