I can only do this if I'm lucky and he's near. If he's all the way on the other side I take too long and after a while get insta-killed. I can't just zoom over to him cuz he's too far away. I can't move quickly because I have to move from bubble to bubble and I have to time it so I can only move once a mirror image is done casting, otherwise I just get pushed back.
What's the trick here?