This is definitely a niche keyword that isnt evergreen
The legendary creature in charge of this deck is Mirko, Obsessive Theorist
Having Galadriel as the commander makes perfect sense, and the fact that there are so many lieutenants also feels flavorful because it plays into a large council idea that fits Tolkiens elves really well
For example, if you activate Raging Ravine's last ability twice and then attack with it, you'll put a +1/+1 counter on it twice
However, in the right deck, where the graveyard can function like a second hand, it becomes one of the best draw spells in Magic
The Thrinax doesnt care if the soon-to-be-dead creature was already on the battlefield when it came in, which means any creature you repeatedly feed to Ashnods Altar or Phyrexian Altar will bring plenty of Saprolings with it