foundations collector booster box Magic The Gathering and experience quintessential Magic Wizards of The Coast Magic:

Starter guide

one-piece molded construction maintains a smooth, stable profile that is easier to hold, sort, stack and arrange, while the no-film surface means every rigid card holder is ready to use directly from the package for collection storage, display setups, inventory organization or mailing preparation 25 Pack for Growing Collections: This set includes 25 jumbo top loaders for cards, photos, prints and paper memorabilia, giving collectors, artists, photographers and sellers a practical supply for separating categories, organizing new additions, preparing items for display or adding rigid support during mailing

So technically she fits the criteria, although she is far more spike-centric than any Mythic from Shards block

According to EDHREC, over the past two years, Animar, Soul of Elements is the 30th most popular Commander in Magic