Everyone is Selfish

Spatial Specialization: Casting difficulty when using spatial magic will drop by one level. Mana consumption will decrease by 20% and effects will be increased by 20%.

The three effects were all useful. The drop in casting difficulty meant that Roland would be able to learn high-level spatial magic earlier on. In battle, having a decreased casting difficulty meant a higher success rate of casting.

There were too many factors to take into consideration during a battle. One easily failed casting magic spells that they weren't too familiar with or had recently mastered. The enemy would also most likely disrupt the spellcaster. Thus, the difficulty of casting spells was rather important in battle. The lower the difficulty, the better.

This was also the reason why it was rare for mages to use advanced spells from the very beginning.