It will tap for one color of each mana, and thus can really help in different places with mana smoothing
Other cards will tell you when and how to interact with your Attractions, and they will be an important part of Unfinity Draftso important that Draft Boosters (as well as Collector Boosters) have dedicated slots for you to open them
It can gain life, grow stronger, or take down artifacts and enchantments depending on what the moment calls for
Opposing creatures die all the time in Commander, and every time they do Vren progresses your board presence
It poops out little dudes to protect itself, it resurrects all your weak creatures (who may have fallen while protecting it), and if you're already in a fairly comfortable position when you cast her, Elspeth closes out the game in no time, turning anything you pick into a highly relevant flying threat