It serves as both a ramp spell and something to ramp into that helps bridge the mid-game before you start casting massive monsters
You lose some consistency but the strategy holds
Over the years, Noivern has maintained its presence due to its distinctive design and utility in battle
Some cards are easier to cast when your graveyard is full, like Tolarian Terror, while others are stronger when you force your opponents to discard, mill, or otherwise fill their own graveyard
We are far enough into the sets cycle that I can say this with confidence: Its pretty amazing that were going to be able to buy so many awesome cards for some very cheap prices, and that they printed a set with two subsets: BRO, plus the BOT and BRR sets
Firstly, when it enters the battlefield, it creates a 5/5 Tyranid token, which gives you a backup to swing with if Old One Eye is removed