The Bestow cost is just too high compared to a card like Angelic Destiny, which is already in the precon
To grab the gold star holographic version of the dark type evolution, Umbreon, players had to accumulate 70,000 XP points (basically, people had to win a lot at actual matches)
Creative manager for Magic , Alicia Mickes, talked about the inspiration: "The borderless planeswalker card art concept was to build on the many facets of each Planeswalker by featuring exciting vignettes of their varied Zendikar adventures." Lead art director for Zendikar Rising , Taylor Ingvarsson added, "This time around, we wanted to deliver on a risen lost civilization that provided the characters in the story and players to engage in the high risk, high reward of daring adventure into these lost Skyclave ruins." This Planeswalker art really captures the spirit of Zendikar so well that we turned them into posters and shared them with stores
Besides, treefolk as a collective need cheap creatures