It's a creature type unique to the setting, and many players have been hoping for more for years, and this is the only one we received at Rare and there were none at Mythic
It has been reprinted a total of seven times in casual products (three times in Planechase and four times in various Commander products), always with the same art (except for a FNM promo)
Rather than crystalline or abstract effects, Boootas work is celebrated for detailed, serene backgrounds and a classic feel that captures the natural environments of Pokmon
Its middle ability is a strong one for aura-based decks since it gives umbra armor to a permanent, but its the ultimate that were interested in today
Its past its heyday and was never all that oppressive in Commander
The difference, though, is that Vivi Ornitier has promise in a variety of different formats