You get 2 rounds of bless effects after you cast it, if I'm not mistaken. Bless is not that useful for this fight though.
- Get all the healing spells and equip them on your hydro char. You can respec your Lohse (even someone else too) to focus more on hydro to get better healing/dps on hydro. You won't need any pyro for this fight.
- Get rid of any oil barrels in the area, and burn all the oil surfaces before starting the fight.
- Stock up on scrolls of Armor of Frost, Restoration, and Teleportation and distribute them to all party members. Once a blob has used its jump ability, if you teleport it somewhere far away, it will be harmless for a while.
- Stock up on (Large) Potions of Fire Resistance.
- Look to the tents near the shore. If you have Teleportation and are standing on the top platform, you can teleport the blobs to where the tents are. They will be stuck there and do nothing. You can teleport Gwydian there too just to save yourself the trouble of having to babysit him (which makes the fight MUCH easier).
- An alternate approach to the fight is to relocate the fight to the shore because surfaces won't work when you're in the water.
