Thread:PassionatePubli/@comment-45306549-20200326080104/@comment-32094364-20200326141724

Honestly, I would get the Pets instead. The problem with all legendary Cookies is that they can only ever be useful for a few months before they slowly become useless, like epic Cookies but longer-lasting. The Pets stay incredibly useful and you will see them constantly, aside from Emerald Golem. Magmabird and Ocean Dragon have stuck around for a really long time and Yeti is quite good too.

However, if you're asking specifically for Cookies, Millennial Tree is the only somewhat useful Cookie on that list right now. A lot of people are speculating that Sea Fairy will get a Magic Candy (though nothing is confirmed) so you could also try to level her up in preparation for the possible buff.