Each of these cards has been illustrated by a different artist
Any player other than the battles protector can attack it the same way they would a player or planeswalker, and its protector can block creatures that are attacking the battle
Dungrove Elder, of course
And among the most valuable pulls you have the special Phyrexian-language cards, and borderless manga-style cards drawn by famous artists (Junji Itos Elesh Norn, Mother of Machines, for example)
Shinies have made homes for themselves in other Pokmon games, spinoffs, mobile titles, and even other Nintendo games
Its cheap, the ability costs nothing, you have no timing restrictions, and you can even eat Treasure and random artifacts like Mycosynth Wellspring for extra value