Lucario ex is likely to make a great finisher, and since it evolves from any Riolu, it can go in a deck with regular Lucario to give you more evolutionary options
sacrificing one of your creatures for a specific boon)
Store your cards in protective sleeves or cases to protect your investment, and always keep them in a cool, dry place
just give these scalpers a wide berth
Before it was added to the MTG banlist (unjustly punished for Hogaak's sins) Faithless Looting used to fuel all kinds of decks in Modern - like Hollow One, Young Pyromancer, and Izzet Phoenix
If there's any bad news, it's that there are still a lot of bulk and semi-bulk rares in the set, with 60% of the rares from Guilds of Ravnica falling into that category