[Erendis]

As Formendacil mentionned before,there was no real summon for the Council of Elrond.It could be better called a string of coincidences that drove the participants there-by the way,Formendacil,nice comment about Eru's interference,which if seen bearing in mind that Eru and Mangwe have not forgotten Midddle-Earth,it will end to another 4 at least pages of comments-.

As for the effeciency of the White Council,the first question is whether the rest had any knoeldge of Necromanter existence.And even if they had,with all the respect to the other tribes of Middle-Earth and without underestimating their courage,what could they possibly do for help?Of cource the answer here would be "They didn't know about the Ring too.As for the help,the same was thought for Hobbits and see what they have accomplised in the end".However,in the case of the Necromanter there was no almost impossible solution,like casting the Ring into Udun.In fact,they weren't certain of his identity yet.So,supposing that there were Humans and Dwarves etc in the Council,they wouldn't have been asked to go in Dol Guldur having no clue of what they were to face,like Gandalf did,but might have given just an oppinion,which wouldn't have changed the final decision.And when the Council got him out of there,it used its strength to do it,which means magic and possibly the Three.Were there such forces available elsewhere?