Ah, the healer role gives me memories...
Interesting concept, I can imagine it could get crazy with deeper combat mechanics (healing ailments, casting float before an earthquake attack to prevent damage a la Final Fantasy, etc). Kinda makes me think it would be a cool combination for a puzzle rpg game (or even a full-fledged rpg game, why not)
It is short, but has lots of potential. Good job! (The art is great btw)