Land count arguments in Commander are usually curve arguments in disguise. Two decks with the same commander can honestly need different lan...
Land count arguments in Commander are usually curve arguments in disguise. Two decks with the same commander can honestly need different land totals because one intends to win with four-mana spells and the other tops out at eight. The curve — the shape of your mana costs — is what turns 'how many lands' from a superstition into an answerable question.
Real lands, read exactly
Myriad Landscape — Land (mana cost ): This land enters tapped.
{T}: Add {C}.
{2}, {T}, Sacrifice this land: Search your library for up to two basic land cards that share a land type, put them onto the battlefield tapped, then shuffle.
Mind Stone — Artifact (mana cost {2}): {T}: Add {C}.
{1}, {T}, Sacrifice this artifact: Draw a card.
Every land named here can be checked in the MTGBrew card database — mana-base advice should always survive a trip to the oracle text.
How to apply this to your deck
Work backwards from the turn you must not miss. Identify the mana value your deck's plan depends on casting on schedule — often the commander, or the engine piece the list is named for — and set your land count so that ordinary draws reach it on time with ramp included as partial lands. Then check the tail: a deck whose expensive spells cluster at seven and eight mana needs either more lands, more ramp, or the discipline to cut the top end. Every land-count rule of thumb is secretly assuming a curve; state yours and the number follows.
Build the list in the MTGBrew AI deck builder and count your coloured sources colour by colour against the spells you actually cast early; the MTGBrew Learn guides return to this habit in every mana-base piece, because most 'bad luck' in Commander is a mana base quietly miscounted at build time.
If this topic is on your bench, keep going with Skullclamp in Commander: What It Does and Which Decks Want It — it covers the neighbouring decisions from a different angle, and the two pieces together give you a fuller picture than either one alone.
The short version
A mana base is a promise your deck makes to its own curve. Keep the promise measurable — sources per colour, lands that enter untapped when the early game needs them, utility slots that still tap for mana — and the strategy on top of it gets to be the reason you win or lose, instead of the lands deciding before the game starts.
Keep reading
Keep reading: Skullclamp in Commander: What It Does and Which Decks Want It and Rules: Protection, Explained with DEBT — What It Stops and What It Misses.
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