I know there are alot of arthas edits, However, i didnt really like the size on them. So i resized him/frostmourne to around twice their size.
Heres a example (Normally arthas would be the size of a human)
Yes thats my real druid,and if you armory him im waiting for s4 to get up arenas.
I also changed force of nature to look like a downsized Sapphiron(the frost aura they have is still up to scale so that looks kinda weird or cool how ever you take it and the tales stretch alot when they turn)*I suppose this would apply to any treants in game*
Arthas/Treants- patch-6.MPQ
Frostmourne- patch-7.MPQ
You need the model edit fix for The lich king/treant edit