Quick Comparison: Top 5 Most Valuable Cards ROI Potential based on historical appreciation, rarity, and market demand ( = Low, = Exceptional) 1
The first two cards Id want to put into a Bhaal deck are Kardur, Doomscourge and Karazikar, the Eye Tyrant
From a collectors perspective, this card hits a valuable niche: Mewtwo cards already command perennial demand, and Rocket-themed variants historically age extremely well (think Gym Challenge, VS Series, and the Japanese Web reprints)
Will you get Treasures or possibly more
If yes, then getting board games is a fantastic choice
For example, if you know a crucial card is in your Prize Cards, you might prioritize knocking out less valuable Pokmon from your opponent to dig for that card