I want to clarify some stuff here in light of the latest rumors on points and such from the Generals handbook.
I will be playing my Death forces for the Summer campaign,I have Nagash along with Neferata and a rather extensive collection of old and new Death units/models.These rules,including the summoning nerf,I feel are going to be just fine and actually make for some very balanced and competative games.
First off,according to the Warscroll for Nagash,he can cast/dispel a total of 8 spells at full strength,he has a +3 to cast and unbind as well.
Now the way im reading this persons rumor report,as a summoning player I will be able to set aside a point amount for summoning.During the game I can choose a unit to summon(any unit/model from my collection that is),pay the points for it,then roll to cast.Of course if it doesnt go off I think its safe to assume that the points arent spent..as well I cant attempt that summoning spell again until the next battleround,,fair enough.
With Nagash`s bonus to casting he should have no problem at all getting units out rather quickly and in fair numbers.Even the doubling of models could be a boon even though the additional warscroll would have to payed for as well,but I would get two for a single cast roll...I believe he would be able to cast Terrorghiests on a 7+ with his best bonus,,add another +1 if hes near arcane terrain,,,,or even get some Morghasts out early(on a 4+ even) then gain another +1 to cast.the cheap units of 5 or less to cast would only fail if double ones were rolled.Basically I can start on the board with just him and some bubble wrap troops,finish deployment before my opponent and go first(depending on scenario rules of course).Then spend my first turn summoning out units from my collection specifically catered and likely optimally positioned to deal with my opponents army.I can see this as a viable way to use him and is likely why hes costed so high.
Ive played Nagash a few times in open play,,,basically his summoning is just not fun unless your opponent has some hard hitting stuff on the table.Probably the best battle with him was against Glottkin and large army of plague bearers and nurglings.Other times its been so one sided that we gave up on it..This new system certainly does look to be a nerf to him,but not even close to making him useless...