What I like to do for revivals:
is first clear phase 1 and get the Flower Gem
then grind for sealstones to buy the girl only
wait for phase 2 while catching up on events if I'm not done w/
phase 2 - grind and buy everything
Rite now, Ima done w/ Xmas event and only doing it for life crystals but not all of the time
I just do Xmas event, reissued, and dailies if I need Bloom Dragons or Manyus