Sure, the tokens on the backside are decently statted, especially if you can grow them
Beacon of Creation Blanchwood Armor Dairy Cow (playtest) Flourishing Bloom-Kin Fruition Howl of the Night Pack Jarad, Golgari Lich Lord Jyoti, Moag Ancient Knight of the Reliquary Last Stand Nissa, Ascended Animist Primal Bellow Rofellos, Llanowar Emissary Sapling Nursery Sylvan Primordial Tangle Golem Timbermaw Larva Waiting in the Weeds Withering Gaze
The odds of opening a mythic rare are lower than opening a regular rare, and these cards are often much stronger than other cards at other rarities
The trick for the design team was figuring out what kind of cards wanted to have transmute on them
That said, Protection is better than Hexproof, and can double as both a protection spell and a way to make your Voltron Commander unblockable in the right context
References efour.proboards.com