Spell Energy Cost Reduction

[TippetsTX]

Originally Posted by Wayne

If your IQ is five greater than the spell requirement – reduce the spell’s casting cost by 1. The cost continues to decrease by 1 per each additional five IQ beyond the spell's requirement.

Apply the same reduction to the cost to maintain a spell.

I like this, but would it apply to spells that have stacking effects based on the ST you put into them (i.e. magic fist, fireball, etc.)?

Can I also assume that the ST cost could never be reduced below 1?