Spell bonus

Spell bonus refers to the points that you can accumulate to "boost" a spell. Boosting a spell means to move it up to the next spell level. To boost a spell, you must use the number of spell points equal to the current spell level to raise it's level. This means it takes 3 spell points to move a level 3 spell to level 4. You get 1 spell bonus or spell point per level. Spells can be boosted to a max level of 5 at the moment.