Talk:Halloween 2017 Event/@comment-29027964-20171025103712/@comment-2620:0:2820:220E:3C04:C9DD:6E97:3B1E-20171025112749

For the most part, you'll see healing can be affected by debuffs or buffs (more often than not debuffs from the enemy), while max HP up is relatively safe, given how rare buff nullifies are.

I will admit, though, given CEs that boost healing like Maid in Halloween, healing can certainly be more potent given the right set ups.