Tarot was never declared an instrument of heresy. Many card publishers were involved in publishing both playing cards and symbolic cards with religious content. Playing cards were sometimes banned along with other gambling games. Tarot was not singled out as a separate group. After the Reformation, in Protestant lands, the Tarot cards "The Pope" and "The High Priestess" became unacceptable, and they began to be called by other names.
In fact, the Pope is in Rimpel's signature. There are also Star Wars cards, but they are not playing cards, but collectible ones. If proof is needed, I can take a picture of my brother's room where they are scattered. But here it's a different matter, because the profile of the location can easily be linked to Warhammer, for which there are also collectible cards.
But I decided that all this is nonsense, and Spear is a much better fit for the role of the killer. Why? Because he has a Joker in his avatar and signature!!! I haven't watched the Batman movies, but it seems that this character was throwing around a deck of playing cards... not to mention the connection in the name. So I think everything is obvious, and within reasonable limits of complexity. Execute Spear.
Added 1 minute ago
The Mafia is creating a spread of votes, let's keep that in mind.

За всем следят машины благодати и любви.