A THREAD FOR NEWCOMERS!

Yes, the retaliation when attacking a blinded unit will be 100%, if Fire is not leveled.

No need for disinformation, all spell effects with a basic level school and without a school at all are identical; the only exception, as far as I remember, is Dimension Door, which is cast once per day without the skill and -2 times with the basic skill. Blindness, naturally, is also the same whether you have the base skill or not, specifically 50% retaliation strength.