But Stone II cost 43MP and 14 sec cooldown.
So lets say both blm cast stone 2 and lighting1 3 times per battle, that would cost 43*3 (129) + 37*3 (111) totalting 240MP, to recover that you need to sit some time... i guess you have clear mind 1 at that level so you start at 15mp/tick?
________________________
|Mp Recoverd| Time|This tick|
----------------------------------
| 15 | 20s | 15 |
| 31 | 30s | 16 |
| 48 | 40s | 17 |
| 66 | 50s | 18 |
| 85 | 60s | 19 |
| 105 | 70s | 20 |
| 126 | 80s | 21 |
---------------------------------
Sure its good for a good party but not great party.
Also it would be great for some anoying beetles... like quicksand caves, beeing there without blm's are
i guess the party your talking about is not to high level since they cast stone2 so they wont have refresh from rdm or ballad 1+2from bard to help their mp up, or dark staff