This article's content is accurate to the most recent public game version, 0.4.8d.
"Deals water damage to one enemy. Kind of gross, but effective."
Cost: 4 MP
Source: Equipping the Slime Princess' Core.
Slime Bubble is a spell that deals moderate 
Acid damage to a single enemy target.
The following enemies can cast Slime Bubble:
- Crawling Sludge
- Magico Mimic (Using Mimicry: Slime Princess)
- Slime Girl
- Slime Princess