The cards were designed with Link Summoning in mind, allowing them to make all sorts of Link Climbing plays to go into their Boss Monsters, and even set up Extra Links to shut out the opponent's Extra Monster Zone
Us actual players are very few in the grand scheme of things, and we havent been taken nearly as seriously as other competitive games, such as MTG and Yugioh
What affects the value of Aragorn, the Uniter
A card can be valuable because it is powerful in one of these formats, especially Commander, which has a huge casual player base and constant demand for unique cards
Even the small combat tricks that blue scrounges up are enough to make this card very dangerous in terms of commander damage
VS Elves Similar to Storm, this matchup largely depends on how quickly they can get set up