Cartomancer currently shares a lot of utility eith hallucination. Both have statistically the same odds if you open both packs, but hallucination is a lot more interesting design-wise. It has synergy with Oops all 6s and other jokers that synergize with pack opening (Red card, constellation, hologram)
Cartomancer doesnt really have anything. They just generate a tarot card per blind, thats it. The only thing it has going for it is that its consistent and doesnt cost any money, but i feel like thats not enough to make it distinct.
In my opinion, completely reworking it would be the best option, such as having tarot cards be at a discounted price on the shop or have a chance to be free.