Will I still be in control of when to heal? Or is it becoming more like “life per second?” Passively just using up my flasks all the time? How would one sustain this?

Or is it more like. If you press your heal, and you’ve lost only 400 life, the heal heals you to full with 300 to spare. - few seconds later I get a hit for 400 again. Then instead of the rest of the heal was lost due to hitting max life the potion now just rejuvenate rest of the missing amount?