The cards ability to tutor enchantments with mana value 3 or less right onto the battlefield has long made it a staple in Commander decks built around enchantment synergies
Like Yidris in cascade, Breya gives artifacts enthusiasts a redder, perhaps more aggressive option than Urza, Chief ArtificerUrza, Chief Artificer, as well as a unifying force for those who want the full Brothers' War experience in one deck
Although this effect does have a practical purpose within the game, it ultimately served moreso to just annoy your opponents, which is ultimately what lead to the card being completely banned
This solitaire-style gameplay can be frustrating for other players due to taking forever to resolve and increasingly in Nadus case being protected from interaction
With Fangorn in play, unspent green mana doesn't disappear as phases and turns end, bypassing the main limitation of adding mana to the mana pool