Phyrexia's mascot isn't the most popular creature to cheat into play, but its certainly relevant, and it's among the best 4-color commanders in the game
Ultimately, this is a placeholder solution so that more time can be spent on fingerprinting and identifying headless browsers (EG: via how they do font rendering) so that the challenge proof of work page doesn't need to be presented to users that are much more likely to be legitimate
If youre trying to save the most money in building your deck, would you rather get a pack with a guaranteed playable card in it, or risk it trying to get a highly sought after prime
As far as OPs question, the prices are anyones guess
This is a pretty weak card, as a Magic game piece
This is a completely self-contained engine, creating, sacrificing and pumping tokens at your leisure