So, I added in potential planeswalker Ral Zarek, featured in the Duels of the Planeswalker game
Reprints with different frames (pre-Eight Edition frame versus the Modern card frame) or art are valued differently and I have an inkling that Commander-playable cards with a miracle border would possess a higher collectors appeal based on the merit of being printed with a border found only in Avacyn Restored
As a card is laid onto the field, you have the option to attack or pass to the opponent
Then we have the instant Teferi's Protection in White that phases out your stuff to shut down interaction, mass removal, and more
The average CMC of a deck is also a good reference point, with burn and aggro decks having a low average CMC and midrange decks having a higher CMC.
Top Green Common: Rust Goliath A Mammoth Spider that could be a 10/10 ain't a bad card at all, but this card is fourth-picked on average, which seems a little bit high