Common cards remain affordable, while some ultra rare Pokmon cards reach high values, especially when in perfect condition
You can get small incremental advantage with cards like Vampiric Rites and Viscera Seer, bigger effects like Skullclamp or Greater Good, and then of course there are big splashy effects like Jarad, Golgari Lich Lord and Ghoulcaller Gisa
Collection Manager allows you to store your cards online, see how much your total collection is worth and track the value of your collection over time
Sales often skyrocket in the fourth quarter (October to December) due to the holiday shopping season, or around big conventions
Rather than using it early to disrupt the opponent's tempo, I have a desire to wait until turn 4 or 5 to properly target the bomb rare they've prepared in their hand
Many Delta cards look almost identical to their Gamma versions, just with tiny tweaks to rules text or mana costs, though some brand-new cards appeared here, too