You can't pay a gift cost more than once
Black Cards are focused on sacrificing your own creatures and spells and then allowing you to search your deck for specific cards needed for combos
If youre after specific new Pokmon cards, specialist trading card sites and stores will quickly see individual cards go on sale shortly after a sets release
Razaketh, the Foulblooded Well, we know the last of the four Demons Liliana will have to kill will (likely) be a 9-mana 9/9 Demon
Loosely packed cards - real booster packs are sealed tight around the cards, with almost no room for movement
Stripping away Hexproof and Indestructible not just from opposing creatures, but all opposing permanents allows you to circumvent many difficult to answer pemanents, including Theros gods like Xengaos, God of Revels, pesky protection cards like like Darksteel Plate, and shielded lands like Lotus Vale