Jolrael, Mwonvuli Recluse and On the Trail need you to draw a second card which is way easier on your turn, but as you can see from my list, totally obtainable on an opponent's turn
The seven cards currently banned for being culturally or racially insensitive can be found here
I dont think you can run too many copies, but the first one is probably very valuable
Other cards let you do seemingly unintuitive things, like tapping and untapping a Basalt Monolith with a Mesmeric Orb on the battlefield
Some items may have different address information and some items shipped outside of Japan may have had their packaging translated into English, but in terms of the barcode alone that doesnt reveal that information
Unsanctioned Play Restrictions It is a well-accepted fact that gold-bordered cards are not legal in sanctioned tournament play