[Agema]

If you commune for extra magic power in battle, does that also increase the number of gems you can use?

For instance, a W2S1 mage can only use 2 gems, so shouldn't be able to cast a theoretical W2 300 fatigue (requiring 3 gems) spell. However, if you made him a communion master and added 2 slaves for +1 magic, could he then use 3 gems, or still only use 2?