Suggestion: Add Wildcard conversion.

[JackLeach]

I find it really frustrating having a ridiculous amount of Common/Uncommon/Mythic wildcards but never having enough Rares.

I'd love to see a feature where we could trade up or down with our wildcards, maybe with a slight gold or gem cost?

Example: 4 Common > 1 Uncommon or 1 Mythic > 2 Rare or something like that.

I always end up short on Rares and that makes it hard to build decks with any sort of variety. I'm sitting at over 100 Common/Uncommon and 19 Mythics with 0 Rares.