Haliya, Guidata dalla Luce

Haliya, Guided by Light’s second ability checks how much life you’ve gained during the turn at the time it resolves, not what your life total is compared to what it was when the turn began. For example, if you start the turn at 10 life, gain 6 life during the turn, then lose 6 life later that turn, Haliya’s second ability will cause you to draw a card as it resolves.