Masteria Monster Cards Project

No Problem :

Also Oberon from MSea

And Shanghai

I've only seen the Phantom Trees that are facing toward the left:

I haven't seen the Phantom Trees facing toward the right:

I asked IsaacGS about it, and he said that the ones facing toward the right are just part of the background, or something like that (sorry, I have a bad memory.)
I think you should make cards for the first two, if you want.