Was bored in work last night, and came across the idea if GW where to make other wizard mobiles, what they would be like and what the rules would be like. Now this is just my idea so please don't shoot the messenger.
Lore of life
This altar could either being a large ancient tree or a green house of sorts. The spell being something like regrowth allowing to bring back d6+2 models back within a certain area and give +6 regen to units within 6"
Lore of Fire
Could see this being a massive pyre, this spell being something like the SoM fireball spell but maybe toned down slightly and giving flaming attacks to units with 6"
Lore of Metal
This altar having some form of a massive philosopher's stone surrounded by alchemy bench's. Its spell being something like entropic touch from the scarabs from 40K and giving units within 6" +1 to there AS
Lore of Shadow
Now after reading up about this lore, I was thinking of a censer type of thing giving of grey smoke. Its spell not so sure on was torn between something that did DD or something that confuses the enemy to your benefit and it gives -1 to hit for friendly units within 6" of the altar.
Lore of Beasts
This altar having the bones of some huge beast aka emperor dragon or etc. Now the spell not so sure on, probably play it safe and some form of augment spell and not sure what kind of unit bonus this lore could represent.
Lore of Death
Now the only thing that came to my mind and that was due to seeing it in the Monstrous Arcanum and that would be a large hourglass. Again like the lore of the beasts not sure what uber spell or unit bonus this altar would have/give.
Now I now that some might be stronger than the others but I'm no game designer, and was aiming for fluffy and was wondering what you guys think.