I do not believe that Seraphon have the ability to reinforce slain units through summoning. I think that is only Undeath. If you can find some verbiage in the handbook that would elude to that and post it that would be great.
The General's Handbook states:
"Sometimes a spell or ability will allow you to add units to your army, or replace units that have been destroyed. In a Pitched Battle, you must set aside some of your points in order to be able to use these units..."
later:
"Spells or abilities that allow you to add models to existing units don't cost you any reinforcement points. However, in a Pitched Battle, spells or abilities cannot increase the number of models in a unit to more than it had at the start of the battle."
So back to the original point, the EoTG is not reliable as a summoning tool, but rather, as someone pointed out, a support unit for a Slann. I was really hoping that it would be a reliable independent unit to take, but the randomization leaves much to be desired. Again, hopefully they errata it to allow you to downgrade the cast to the spell below it, just as the 18+ roll states. I guess time will tell.
I did field an EoTG in a battle last night vs my Dwarven (Disposssed) friend. We played a 2000 point battle from generals handbook. He conceded on turn 4. During my phases, EoTG rolled heal first round (which did nothing) and then in the subsequent turns rolled the D6 mortal wound 25" range ability which was nice. So he fared pretty well. I don't have photos, but wouldnt mind writing a small BR from memory if you would like.
If you have played with an EoTG since General's Handbook was released, please let me know how it all went
