Xerneas EX 97/146 from the Classic Collection is currently valued around $5.50 at the time of writing
I highly recommend focusing on building one very good deck that will get you through a lot of duels quickly, so then you can easily grind a lot of duels for DP
The post-2015 Commander tuck rules are evidence of that
At the beginning of combat on your turn, if The Ozolith has counters on it, you may move all counters from The Ozolith onto target creature. Its a really useful way of keeping your mana investments a bit safer than they would normally be
Collectors want tight centering, sharp corners, clean texture, and no surface scratches in their rare Pokmon cards
One major thing to keep in mind is that your seven lands have to have different names, so if you have six Forests and then play Field of the Dead, not much is going to happen