Luckily, it appears that all of the foils look a bit off so far so keeping a watchful eye and being weary of ebay prices that seem to good to be true are the first line of defense
They have a black star () rarity symbol and are generally more valuable than regular rare cards
I expect the English ones to drop a little bit, and the JPN ones to drop quite a bit, but keep an eye on both for lows in a few weeks
Anytime another creature comes into play, you get to pick between adding three green mana, placing a +1/+1 counter on all creatures you control, or perhaps most importantly, scrying 2 and then drawing a card
Sableye - Darkness - HP80 Basic Pokemon [D] Lure Out: Reveal the top 5 cards of your opponents deck
Inside the box, you'll find vouchers to unlock both decks in Magic: The Gathering Arena, so you can play online as well