If that activation is negated by another card you can use a second one since the game state does not acknowledge that you activated the first one
Old Pokmon cards tend to be more expensive since theyre usually scarcer than newer cards, especially if theyre in good condition
You can put it in a 40-card deck and expect your opponent to spin it, but it currently shines best in a 60-card deck
Typically I ran a deck with Gyarados and Dewgong for attackers, and Chansey to sit up front and stall while I build my Bench up
SA cards pull at roughly 1 per 4 boxes total, distributed across all SA variants in the set (Mew VMAX SA, Mew V SA, Genesect V SA, Greedent V SA)
Graded Population Report: Gastly [Shadowless] #50 Visualize the distrbution of grades in the chart