How to Build a Commander Deck From Scratch | 99 Cards, One Strategy

Learning how to build a Commander deck from scratch starts with a single legendary creature. That one card shapes everything below it — a 100-card singleton deck where each non-land card appears exactly once and every card’s color identity must match your commander’s. The process follows a proven sequence: pick your commander, define your plan, build to a balanced ratio, and refine through play. Stick to this order and you avoid the most common mistakes that stall new builders.

Pick Your Commander and Define Your Vision

Your commander is the only card you’re guaranteed to see every game. Choose a legendary creature whose colors, mana cost, and ability match the experience you want — whether a budget build under $100 or a high-power deck for a tuned playgroup. Before committing, confirm your pick isn’t on the official ban list. A quick check saves you from building around a card that isn’t legal.

Once you’ve selected a commander, write one sentence describing how the deck wins. This “elevator pitch” keeps every card choice aligned. A token deck might aim to “flood the board with creatures, then tap them for a massive fireball.” That one sentence tells you which cards belong — anything that doesn’t advance that plan is a candidate for the cut list. Every card in the 99 should either ramp you toward the plan, draw you into it, protect it, or execute it.

The 38/10/10/10/30 Card Ratio Template

The most reliable starting point for the 99-card deck is a proven ratio: 36–38 lands, 10 ramp spells, 10 card-draw pieces, 10 removal or interaction cards, and roughly 30 cards dedicated to your theme and win conditions. This template isn’t rigid — aggressive decks might trim to 34 lands and add more threats, while control decks may run 40 lands with extra countermagic. The key is knowing why you’re deviating and having card draw to compensate.

Aim for a mana curve where most spells cost 2–4 mana. Cards above six mana need a clear reason for their slot — a game-ending threat or a unique effect your strategy requires. The alternative “8×8” method organizes the 99 into eight piles of eight cards each — ramp, removal, draw, synergy — plus the commander and 35 lands. After slotting your spells, count the colored mana symbols in your deck and adjust your land base to match those percentages. A deck that’s 40% blue pips needs roughly 40% blue-producing lands; this pip-to-land matching is the most overlooked step in deck building.

Color identity rules apply to every card in the 99 — each must share a color with your commander. Use deck-building tools to filter and track your choices as you build. If you’d rather start from a proven list instead of building from zero, our roundup of top pre-built Commander decks can help you find one that fits your style and budget.

Build, Test, and Tune Your Deck

Assemble cards into themed “packages” — ramp, draw, interaction, payoffs — instead of 99 random one-offs that never connect. Slot each card into its category, then make hard cuts: anything slow, situational, or off-strategy goes. Goldfish the deck by playing against no opponent — draw opening hands, play out turns, and check whether the curve holds and the colors flow. Real games reveal real problems: a commander that draws removal with no protection in the 99, packages that work at cross purposes, or too many high-cost spells with too little ramp to reach them.

Tune from there. Swap expensive cards for budget alternatives where the function is the same. Adjust mana fixing when you keep hands with the wrong colors. Use deck-building sites to track your list, view your mana curve as a graph, and compare against popular builds for the same commander. Many strong decks started as a rough first draft that got 10–15 targeted swaps. The EDHREC guide to building a Commander deck offers deeper examples of each step, including how to evaluate individual card choices.

Common pitfalls include favoring raw power over synergy with your commander, buying single basic lands instead of bulk packs, and skipping the pip-to-land matching step. Double-sleeve any deck worth over $100 to protect against spills and wear. Check newer sets for Commander-specific rules that might affect your build — the format evolves with each release.

FAQs

What does the singleton rule mean in Commander?

The singleton rule allows only one copy of each non-basic-land card in the 99-card deck. Basic lands are the exception — you can run as many as you need. This rule forces variety and makes every game play differently, which is the heart of the format.

How much does a Commander deck typically cost?

There’s no official price. Budget builds using cheap staples and bulk cards run $50–$100, while high-power competitive decks can exceed $500. The format works at every price point, and many strong commanders remain budget-friendly on the secondary market.

What happens when my commander dies or gets exiled?

You may return your commander to the command zone. Each time you cast it from there again, it costs two additional mana — this “commander tax” makes removal meaningful and rewards decks with ramp and cost-reduction effects that can recast efficiently.