Summon Kind explanation

[sradac]

So i've found threads about summon kind, I know that it only summons monsters that would be at the depth you're on, but what does the power effect? would a power 15 summon kind of "u" only summon devils at depth 15 or lower? if that was the case why not just make every spell power 1 you still get what would be on your depth? I just dont get it. And just what kind of measurement is power for this spell?

Created a spell "Summon Minor Devils"

summon kind of "u" , duration 15, power 15, will this even get me anything? I was guessing it would get me devils from depth 15 so im guessing imps and other weak devils...am i totally wrong? Sorry summon kind is just confusing.

[kipar]

Summon Kind depends of your Conjuration skill, not only power of spell. With power 15 and conjuration skill 0 it is unlikely weakest of imps will come to your call. I don't know exact formula, but i suggest summoning 'f' on low levels - even with spell power 1 small panthers are pretty deadly.
Try using the summoning of 'u' when you have higher conjuration.

[Gando]

imho summon is entirely useless. But that said I am sure if anyone could make it useful Kipar could. Breaking power 1 spells seems entirely within his reach.