For cards with the traditional yellow (front) and blue (back) borders, you want to look for any whitening (white spots) on the corners
You also have some nice plays available to you where you attack, create a Lander, then that Lander functions as an on-board combat trick to push through your damage
However, since it works with counters, you can get some proliferate hijinks involved
Again, if you plan on using the planar cards, then keep it in
They give us players something meaningful to do and good rewards if we achieve them, effectively connecting to the rich FF lore while also staying true to MTG
Overall, green seems fine for picking up solid bodies and ramp, but not much outside of that