Higher Magic - "use weaker spells without exhausting his power"

[Fatt_Shade]

Higher magic give you chance to use spell book 2 times/battle turn. On 1st lvl you can use it 2 times, for spells of no more then 10 mana, so : you can cast first spell and that is 10 mana or lower cost and after that in same turn another spell what ever you want there is no mana cost limit for second spell. In next turn or (any other) you can do this 1 more time so 2 time total in battle.
Expl : battle start you cast stone skin 5mana and magic spring 10mana in first turn on some unit, next turn you cast resurrect on some unit and since it is more them 10 mana you cant cast any more spells in that turn, then 3rd turn you cast haste on some unit and mass bless and that`s it you used 2 turns to cast 2 spells per turn.

On 2nd lvl higher magic give you 4 times(turn) to cast spells with no more then 15 mana cost so first spell must be 15 mana or less and second again have no cost limit. You can do this 4 turn in one battle.

And ofc 3rd lvl 6 times(turns) for 20 mana limit, here first spell cast in some turn is 20 mana or less and after that spell you can cast any other. This goes for 6 turns (not first 6 turns in battle, but 6 turns during whole battle).