ANSWER:

You must not keep such cards nor sell them as this includes shirk beliefs and unislamic practices. Tear them off beyond recognition and throw them away. 

https://islamqa.info/en/answers/22069/what-is-the-ruling-on-playing-pokemon

QUESTION: I have a collection of Pokemon cards from before I began practicing Islam and they’re worth a large sum of money. Would the money from selling them be halal? I don’t want to profit from them, but I also don’t want to just give them away for free.

Sports, Entertainment and Music | March 13, 2023 12:45 am
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QUESTION: Is working as a filmmaker or videographer haram? (Using music, interacting with opposite gender, making videos with non muslim..)
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QUESTION: What are the views on many Muslim posting Instagram and tik tok videos which show their daily life and islamic progress (includes prayers and going to masjid doing daily chores etc.).As many people say this is for show-off but many say they post it to motivate other fellow Muslim to come closer towards deen. Also they don’t use music and other stuff in it.