EDHREC Synergy Scores Explained: How to Pick the Right Cards

EDHREC is the biggest data source for Commander deck building. But what do those synergy percentages actually mean, and how should you use them?

What Is a Synergy Score?

A card's synergy score measures how much more often it appears in decks with a specific commander compared to all decks in those colors. A high synergy score means the card is especially good with that commander, not just generically good.

For example, Doubling Season might have: - +45% synergy with Atraxa, Praetors' Voice (loves counters) - +2% synergy with Omnath, Locus of Creation (doesn't care about counters)

Both decks could play it, but Atraxa decks benefit much more.

High Synergy vs. High Usage

High synergy cards are specific to your strategy. They're the cards that make your deck feel unique.

High usage cards (like Sol Ring, Command Tower) go in every deck regardless of strategy. They're generically powerful but not interesting choices.

The best deck building combines both: a core of reliable staples plus synergy picks that exploit your commander's strengths.

How Tapped Decks Uses Synergy Data

Our AI deck builder integrates EDHREC synergy data to suggest cards that specifically work with your chosen commander and playstyle. When you generate a deck, the AI prioritizes high-synergy cards over generic good stuff — giving you a deck that feels cohesive rather than a pile of individually strong cards.

Finding Hidden Gems

Sort by synergy on EDHREC and look at cards with 30-60% synergy that cost under $1. These are the hidden gems — cards most people don't know about that are incredibly strong in your specific deck. Our builder surfaces these automatically.

Don't Over-Optimize

A 100% EDHREC-optimized deck can feel soulless. Use synergy data as a starting point, then add cards you personally enjoy. Commander is about self-expression as much as winning.