>>725095773
Uther Pendragon was Arthur's father, not his mentor. Arthur never met him personally.
Frostmorne was incased in ice, it wasn't in a stone.
Claiming Frostmorne doesn't make Arthas king of anything. It makes him the soulless slave of the Lich King.
There are far, far more direct comparisons that could be made with Fëanor and Elric.