This creature is great in goblin decks, but it's also great in plenty of other aggressive decks filled with creatures that can attack right away
Is there a good mono-black zombie commander
You'll need to have a consistent way to get more lands into your hand with other ramp effects to keep making use of her ability, but even without that, Azusa can catapult you ahead of your opponents in a single turn
Aeve brings an oozy army to the table, and with plenty of ramp and card draw, youll never run out of slimy reinforcements
Seven mana's still a fortune for this sort of effect, but permanent creature exile on an ETB isn't something blue cards get to do often
Not with Gandalf of the Secret Fire, however, who sends your cards away for three turns only to have them return to help you in the future