This skill can be obtained with 1/5000 odds in a move learning center in the Deserts chapter. (That chapter has Ratzo Rocks In it) When you unlock it, it's effects are:
Water Beam: Can Be a different color
Does 5 damage, but 4X damage to Rock or or machine or alien type enemies.
Here are some reactions to the attack:
Starchild: (Very Loud Scream Noises) Translation: OW IT BURNS SO BAD!
Moonchild: (Scream Noises) Translation: This is extremely painful!
It also gives those enemies a Soak effect, which does 10 damage each turn.