I look at my earth spell and water spell. There are still not that many useful spells to give supportive buffs or spell to Azrael, so I use the basic spells that I have right now and experimenting with them while helping Azrael from behind while he's leveling up his level.
[Combining [Fire Ball] and [Stone Crush] with [Fusion] skill]
[A new skill has been generated]
[Active offensive skill [Blazing Stonehammer] has been learned.]
"This one should be an AoE skill."
I cast it on a group of monsters, and then a big boulder of burning stone appears on top of them and then strike it down toward them.
[3416]
[341]
[341]
[341]
"So this one has a tick damage over time. How nice..."
[Combining [Blazing Stonehammer] and [Water Ball] with [Fusion] skill]
[A new skill has been generated]