Hello there - i realised i spendt alooot of time with my soveriegn and the other casters in my massive army to click the mana button - click the page turn on their spellbook - click the spell - click the cast spell - and then click the target - for a spell i use alot (standard signler target damage spell for instance-

Here i suggest that you would add maybe like 3 -6 custom buttons where you can right click - pick a spell - and now every time you single click that button it picks the spell for you - This would be VERY usefull! as the amount of time spendt the other way is just serious time consuming. the button could even gray out when not enough mana and such.

Hope you will like this and see the usefullness!