Wretched Gryff, seen below, is an Eldrazi Hippogriff with a normal casting cost of seven mana, but can be cast with its Emerge cost if another creature is sacrificed
For the most part, these are straight-up unplayable
The printing plates for this prized card were all destroyed afterwards, ensuring that there would only ever be one copy of this card
I was really surprised how easy and rewarding the experience has been and though I suppose I do miss some of the human interaction, overall I would say the experience has been very positive
There certainly is something there, however it's incredibly fragile and easy to disrupt with most forms of interaction ranging from hard removal to soft removal (bounce spells) to counter magic
Since Arceus ex is a Basic Pokemon, this also means you don't need a setup that involves multiple turns to evolve it