As you may know, I work with Tarot a lot. Of all my magical practices, Tarot is my most used. A while ago, I saw someone talking about using Tarot in spells. Upon further research, I found that it isn't a common practice. It is something I intend to do though, so I figured I would explain what my prospective process is.
Say I want to cast a luck spell. First things first, I would find a card that describes the luck I want to have very specifically. Let's just say I decide I will use The Wheel of Fortune. I would focus on the energy of that card, connecting it to what I was to achieve, and then send that intent out. This may be accompanied by meditation or anything else I do during a spell.
Alternatively, I could pick a card that represents bad luck and visualize that card's energy leaving me. It depends on how I look at it.
Say I want to cast a luck spell. First things first, I would find a card that describes the luck I want to have very specifically. Let's just say I decide I will use The Wheel of Fortune. I would focus on the energy of that card, connecting it to what I was to achieve, and then send that intent out. This may be accompanied by meditation or anything else I do during a spell.
Alternatively, I could pick a card that represents bad luck and visualize that card's energy leaving me. It depends on how I look at it.