[HoneyBadger]

I think it would be cool to give Marverni the ability to National Summon a "Menhir". A Menhir is a standing-stone, and the Druids were famous for them. They'd put them in places of power, kind of like Stonehenge, except just individual standing stones. If you made these immobile, but with a lot of HP and protection, and then gave them say 2 nature, 2 earth, 2 astral, they'd make great support-units and really help out Marverni's PD. It would be very thematic.

Marverni also worships trees, so-alternatively-maybe you could have "Menhirs" with 2 earth, 2 astral, susceptible to cold 25%, and "Rowans" (the Rowan tree was considered sacred and magical by the Celts, and it's a pretty name that balances well with the word "Menhir".) with 2 nature, 2 astral, susceptible to fire 25%, for sake of variety, additional theme, and interest.

The Celts were also a very large people, and had quite a few giants myths about them, so maybe a few of the high druids descended from giants or firbolgs. Maybe they could have a national summons that calls up one of these ancient giant druids with the same magic as a druid, but better stats and extended lifespan. Or maybe they can use astral magic ("using the power of their ancient stone circle to call up the spirit of one of the long dead giant henge-builders")to call up an undead giant warrior-chief with access to death-magic, so they have a death-magic "in".

Another nice national spell that fits in with Celtic myth would be the ability to summon the "Cauldron of Annwn". This is an enormous, iron witch's cauldron which would be immobile but extremely difficult to destroy-infact it could safely be immortal, once summoned-that would produce Banes, 1 per turn. The Cauldrons themselves would be Construction level 5 and require both Death 4 and Blood 4, 80 blood slaves and 80 death gems each. It'd be really difficult for Marverni to make them, but if they did, they'd be quite powerful.

The Head of Bran the Blessed. This is an immobile hero for Marverni. It's an enormous, undead head (size 6) that can't move but can bite. It's got lots of hit points ofcourse, is sacred, and regenerates, but is also a very skilled magic user: Holy 4, Nature 4, Death 4, and Astral 4. 1 head slot, no misc slots. Makes a really interesting and different hero for Marverni.

Druids had the ability to curse people, according to legend, and their personages-aka their bodies and their lives-were considered very sacred-so maybe Druids have the ability to curse by touch alone-as long as they aren't holding any weapons, and also gain the Death Curse automatically? Double effect if you take blood-bless.

And finally, again since Marverni's very Celtic-themed, how about a high level evocation spell "Gae Bolga" that allows the caster to throw a spinning barbed harpoon with his feet (yes, that's right from Cu Chulain)?