Precon Upgrades

Upgrade your Commander preconstructed deck with community-validated swap suggestions.

What Are Precon Upgrades?

Preconstructed (precon) Commander decks are a great starting point, but most players want to improve them over time. Grimoria's Precon Upgrade tool shows you exactly which cards to swap out and what to replace them with, based on community data from thousands of players.

How to Use It

1. Go to Discover > Precon Upgrade

2. Browse available precon decks grouped by set

3. Select the precon you own

4. Review the suggested swaps — each one shows the card to remove and its recommended replacement

Understanding Swap Suggestions

Each swap shows:

• Card out — The original precon card to remove
• Card in — The recommended replacement
• Price — Current market price of the replacement card
• Synergy score — How well the replacement works with your commander

Budget Control

You can filter suggestions by budget to keep upgrades affordable. The total upgrade cost is shown so you can plan your purchases.

Quick Actions

From the upgrade page you can:

• Save as deck — Create a new deck with all your chosen upgrades applied
• Add to wishlist — Add replacement cards you don't own to a wishlist
• Check your collection — See which upgrade cards you already own

Data Source

Upgrade recommendations come from EDHREC community data, reflecting what thousands of Commander players actually play. Suggestions are regularly updated as the meta evolves.