[Balance] How shards should affect Spells
From previous playthroughs it has become painfully obvious that the ammount of damage bonus from shards is well beyond what it should be, in addition being able to pick and choose your shards (see death magic) the benefit you can obtain needs to be adjusted in some way. I'm going to lay out a number of options that you are free to discuss.
Mana Shards should
1. Provide a smaller damage bonus to keep the base damage and effect of the spell relatively similar and adjusted by less random elements.
1.x Provide no bonus to damage (or effect)
2. Have their bonuses capped to x number of shards. This will prevent larger maps with more nodes or the ability to change the type of node from getting out of control.
3. Reduce the mana cost of spells appropriate to their school. This should provide diminishing returns (and probably work multiplicatively with traits) to prevent spells from being free.
4. Limit the maximum spell level of that school based on how many shards you have under your control. This is a pacing measure to prevent high level spells from being cast too early in the game.
5. Be changeable in type by either
A: Any caster with x rank in the appropriate spell school
B: The sovereign with x rank in the appropriate spell school
5.x Not be changeable in type by any means
6. Provide unique effects that are otherwise unobtainable, such as a burn effect to fire damage spells, or movement reducing effect to earth spells or fear chance with death spells, etc..
7. Give new champions the related spellschool that are already casters. This could be a chance based on acquiring them, a chance on level up, or a chance per turn, based on the number of owned shards.
8. Be linked to the soveriegns spellschools at the start of the game. That is to say when a player starts a game the nearest shard is always either one of his spellschools or is a special type of shard that can change it's type (once or multiple times) to that players choosing. (idea stolen from marionesi)
The above options are not mutually exclusive, nor dependant upon each other. Implementing some of these may be more difficult than others.