I rather like the idea of blue magic, altho im not sure how it will work with the current rank system in regards to spells.

The only way i can think of it working is say every 2 ranks, you are able to aquire a new ability. so rank 9, you can have up to 5 abilities (of course, you will be able to replace abilities if you wish, but if you want it again you will have to re aquire it)

As for gaining these skills., either something a bit more tricky, say a "learn ability" move, you can use when enemy is 25% health or lower. you must use this for say 30 seconds. neither you, nore the enemy can die in this time window. The second option could be you have the defeat x amount of enemies in a row. An example, 15 dodos gives you sleep ability

Kimiko x