Greetings, Loki mains! Any tips for the God of Mischief?

Hi all! I've been wanting to main Loki for a while now, I'm very familiar with the abilities but I can't seem to get much value with him.

I'm an almost Champion Ultron and Lord Adam Warlock so positioning is very important for me but I'm finding myself kind of "confused" when positioning my clones and choosing the right time to drop the big healing circle.

And which Ult should I go for? I usually steal other support's like Cloak and Dagger and general "healing area" ults.

Any tips are appreciated!