Just a thought on how to change metamagic feats and enhancements for the new Spell Pass. I know this subject has been posted about before and a few of the topics appear to be well thought out.
If I am not incorrect with my memory (as I am not a hard-core caster type in game, though I do have a couple.) the cost of spells are as listed below.
Spell__Base
Level__SP Cost
1 ____ 10
2 ____ 15
3 ____ 20
4 ____ 25
5 ____ 30
6 ____ 35
7 ____ 40
8 ____ 45
9 ____ 50
**As you see each spell level's Tier increases the base cost by 5 SP.**
Existing Metamagic___Proposed Metamagic
Feat Costs:_________Feat Costs:
Extend: +10sp______Extend: +1 SP Cost Tier (+5SP)
Empower: +15sp____Empower: +2 SP Cost Tiers (+10SP)
Maximize: +25sp____Maximize: +3 SP Cost Tiers (+15SP)
Quicken: +10sp_____Quicken: +4 SP Cost Tiers (+20SP)
Heighten: ???_______Heighten: Casters Highest Spell Level Base Cost
Enlarge: +10sp_____Enlarge: +1 SP Cost Tier (+5SP)
Metamagic enhancements could lower the cost by 1 Tier, but to no lower then +1 Tier
or based on the new SP costs leave them as is and its still a marginal increase to the base cost.
Used PHB 3.5 for the "+# SP Cost Tier" formula based on the feats text of Spell Levels Higher then base spell level. IE a 2nd level spell empowered takes a 4th level spell slot.