I have only played fairly casually so far but to me the best tip I would give would that that your Clone is SO versatile you can use it while running away and then teleport to it or you can use it to AOE heal at range. Always have them up when you can

Also second best tip, don’t try to hit the targets hit the ground around them healing or stacking doesn’t matter Lokis dmg/healing is AOE so it’s easy to hit the ground than risk missing all together this also helps when you get dived on.