I dont know to much about dibalo but ill throw in my 2 cents. Be sure you take into affect synergy affects. So put points where thy really matter. Also, i know there are some charms that give plus to summoning skills. I have some on my necro. However, i beleive that you have to be relatively high level to use this. If you mean skeletons as your summons, there are som wands that give 3 to those skills, but mind you they are very expensive. Sorry thats all i could tell you, because again, i dont play it to much.