1. I thought Minor Lifesteal returned a flat amount of health. However, the recent PTS patch notes suggest it can crit, and a year-old thread suggests different players' Minor Lifesteals heal differently.
https://forums.elderscrollsonline.com/en/discussion/418371/who-should-be-running-minor-lifesteal
What's the real story?
2, Player D debuffs Enemy E with Minor Lifesteal. Player A then attacks E and gets health back. Who is doing the healing? Player A (who triggered the proc) or Player D (who cast the skill that caused the healing in the first place)?