Thugmullet

How did Gotrek go in your games? Also Hallowheart has a great horde killer spell in its lore. I would consider dropping purple sun and going the portal instead and you'll have it in your toolbox to really extend on some spell ranges. This list looks fun to play.

You will need someone a little more experienced than me for ideas of implementing stormcast. I can answer a few things however. Not running stormcast as general is no big loss really. With my CoS list I'd usually run a CoS general anyway as the different generals allow for different units to become battleline.. So you can just pay less battleline tax really.. Which is good. What generals unlock what units to battleline is usually dependant on there old WHFB armies they used to be in before the merger. So Dwarf general allows dwarf hamerers to be battleline for instance. Your general on griffin would allow swordsmen to be battleline as a specific answer. There's no stormcast general that moves other stormcast to battleline in CoS anyway. So no loss there. One exception is that Aventis Firestrike can be general in Hammerhal..you get an extra CP once per game for this.. Which is underwhelming as now you can't take the command trait (unique character).. But he's the only exception. The only stormcast I run in CoS are units that do anything my CoS units can't. Knight Incanter (free dispel) and Knight Azuros (re roll ones) are two good examples. Hope this helps.

Technically their not the same spell. One is Amber Spear and the other is The Amber Spear. It's a little rules laywery I admit but still correct I believe. I personally will only run him in Hallowheart. Reason being I'd rather spend points elsewhere if he's not going to be a double caster AND he only has a 5 up save. Hallowheart he can get double cast and 5+*ward no probs. Unlock the core rules spells and then he's got a little bit more damage as well. Under this condition I think he's worth it. Anything less then I think 275 points can be spent better elsewhere.