Go and apply the Poison from Bio, alongside the additional Regen assistance to aid the DoT damage altogether. This will make it take a lot more damage per tick even more so when you put sleep on it.

>>1 Yea but if you have healing 20% less, curaga is great just have Aerith and Cloud cast it as soon as it changes for easy 8-9k dmg and pressured, and if you want to cast sleep/poison that is actually a good idea poisoned will make it take 60 every second, sleep will give you time to max out your ATBs and ensure that those curaga hits dont miss. Baleful fire is the only annoyance that poison can make up for in dmg so you can stay put and wait till it changes form again.

once you do enough damage with cure you may need to hit him 1 or 2 times with a physical attack to g3et him to transition, dont waste that MP!

AND save all boxes around the area leading upto the boss to regain FULL MP after the boss! in wait for the next boss.

jst cast cure on it and stay away from it use ray of judgement when it aint coloured purpleish np easy boss on HM, jst use cloud and tifa for casting pray aerith can solo him.

After struggling with Ghoul I put the game down for a few days. Tried again, and guess what? Healing ABSOLUTELY damages this boss. Not sure why they're saying here it's a waste of MP... they must've tried while he was immune to magic altogether. Aerith was hitting for nearly 2k a Cura!