how do you currently check what decks you can build from your MTG collection?

Hey everyone,

I’m working on a personal project related to MTG deck building and I’m trying to understand how players currently solve this problem:

If you have a large collection, how do you figure out what competitive decks you can actually build from it?

Do you:

• Manually compare decklists?
• Use a specific tool?
• Just build from scratch?

I’d really appreciate technical insight on how you approach this.

I’m building something in this space and I want to make sure I’m solving the right problem before refining the product further.

Constructive criticism is more than welcome — I’m especially interested in edge cases or workflow frustrations.