Certainly not the first card I owned, but I got this Parasect from some random magazine back when I was a kid and for whatever reason I decided to keep it in the plastic wrapping it came stapled to the magazine with.
I remember nagging my mum to buy the magazine for me in the shop. When I think of my childhood collection this Parasect is always one of the first cards which springs into my mind.
As for the first card I owned…