Make new Spellbooks for AP itemization

As one thought on updating AP itemization, Riot should make different versions of Morellonomicon with different passives, the same way , or , or exist. Mages will be able to choose which book they want with different utility options.

To do this I'd increase the cost of Morello some and update its grievous wounds to be always applied like does, so that theres more power for the passive(s). Morello would also keep its mana regen on kill. All the books would have 100 ap, 400 mana, and 20% cdr. Some ideas like:

1. Grant vision of enemies hit by spells for 4 seconds, can place a 120s ward every 120 seconds
2. Choose an ability, reduce its cooldown by 15% (multiplicative)
3. Store mana cost of spells cast up to 20x level, when reduced to below 30% hp receive a shield from stored value.
4. Deal DoT to turrets and epic monsters, increase mana regeneration when you've cast recently.

This will let mages be more flexible in their first item choice which almost always ends up as a mana/cdr item anyway.