A very interesting proposal, I like it. First the easy stuff: Gold of Erebor I think it would be neat if, purely as visual flair, piles of gold emerged in the area affected so that enemy armies battled each other surrounded by gold. Something like parts of this model (perhaps even the Arkenstore could make an appearance as the center piece?):
(https://cdn.discordapp.com/attachments/321803083141087233/707318363751317544/unknown.png)
I think the change to Oakenshield is great, mass invulnerability is definitely not a healthy thing to have. It's fun to play with but horrible to play against. The Gleam of the Arkenstone one is only a name change but it changes the concept, would it also require a new FX?
For the ring hero, I like the changes to the The Immortal, it provides a lot more strategical value. The one I'm not sure about Possessive Nature, I think the idea is good on paper but I worry it won't be as interesting in reality. How big do you see the range on this? What I fear is that people will just use it as a glorified Industry, go through a mineshaft and plop it down on some mineshaft in the back of the map.
I think the triple resource gain should be removed, simply have it be regular resource gain. Basically making the building immune to Durin's Heir for a while, and have it provide a buff to Thorin for as long as he is nearby, perhaps the building should only be invulnerable for as long as Thorin is nearby too?
Also, it's probably time to give Thorin's ring form some level requirements again, he's a bit of a weird hero like that, all his abilities bar one are available right at the start, it doesn't feel like there is any progression. Just a power spike at 10.
- Level 1: Fili and Kili
- Level 1: Durin's Heir
- Level 4: Possessive Nature
- Level 7: The Immortal
- Level 10: Gold of Erebor
Oh and finally, I'm definitely in favour.