Glossary
The 41 canonical concepts of the guide. Each entry links to the lesson that introduces it and to the lessons that build on it.
- Limited Environment
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The family of MTG formats in which players build decks from a restricted, freshly opened card pool rather than from an unrestricted collection.
- Randomness
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The structural uncertainty of Limited play. The guide separates it into distinct kinds rather than treating it as one undifferentiated force.
- MTG's Golden Rule cornerstone
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The guide's central organising principle, presented as the rule that governs how mana is converted into board impact over the course of a game.
- Mana Sink
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A card or ability that converts surplus mana into value in the late game, when mana is abundant rather than scarce.
- Mana Exploitation Score (MES)
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The guide's measure of how fully a deck converts its available mana into useful action across a game.
- Tempo
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The rate at which a player converts mana and cards into board position relative to the opponent.
- Mana as a Resource
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Mana understood as the game's primary scarce resource - scarce in the early game, abundant later - rather than as a cost to be paid.
- Casting Speed cornerstone
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When in the game a spell can realistically be cast, given its mana value, its coloured requirements and the deck's actual sources.
- Cost in Cards
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The price of a play measured in cards surrendered rather than in mana - the guide's treatment of card economy.
- Card Advantage
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The net difference in cards available to each player as a result of an exchange.
- Cost in Life
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Life treated as a spendable resource with its own exchange rate, not merely as a loss condition.
- Stable Card cornerstone
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A card that is useful across a wide range of game states, so it rarely sits dead in hand.
- Situational Card cornerstone
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A card that is powerful only when specific conditions are met, and of little use when they are not.
- Frequency cornerstone
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How often the conditions in which a card is at its best actually arise.
- Flexibility cornerstone
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How useful a card remains outside the conditions in which it is at its best.
- Finisher
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A card whose role is to convert an established position into a win.
- Combat Trick
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An instant-speed effect used to win a combat exchange the opponent believed they had.
- Creature Booster
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An effect that improves a creature already on the battlefield.
- Life Gainer
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A card whose primary effect is to restore life, evaluated through the guide's treatment of life as a resource.
- Synergy cornerstone
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The quality of a deck that comes from how its cards work together, distinct from the quality of the cards taken individually.
- Functional Synergy cornerstone
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Cards working together because they serve the same strategic plan.
- Operational Synergy cornerstone
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Whether a deck can actually cast its spells - mana, colours and curve considered as a working system.
- Operational Consistency
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The reliability with which a deck does what it is built to do, game after game.
- Mechanical Synergy cornerstone
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Cards working together because they share a set mechanic - and the warning that this can become an end in itself rather than a means to the plan.
- Draft
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The Limited format in which players build a pool by picking cards one at a time from passed packs.
- Signal cornerstone
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What the cards still present in a passed pack imply about which colours the neighbouring drafters are not taking.
- Signal Strength
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How much confidence a signal warrants, given the pick number at which it appears.
- Pick Order
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The order in which cards are taken, understood as a consequence of signals and plan rather than as a fixed list.
- Card Utilization Rate
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The proportion of a drafted pool that actually makes the final deck.
- Colour Commitment
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When and how firmly a drafter settles into colours, and what is given up by committing early or late.
- Sealed
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The Limited format in which the whole pool is opened at once and no signals exist.
- The Initial Decision cornerstone
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The keep-or-mulligan decision, treated by the guide as a structured evaluation rather than a feel call.
- Mulligan
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Returning an opening hand for a new, smaller one.
- Safe Spell
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A spell that can be relied on to be castable and useful, and so supports keeping a hand.
- Land/Spell Ratio
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The balance of lands to spells in an opening hand, evaluated against hand size.
- Mode Shift
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Recognising that the game has moved into a different phase and that the right plan has changed with it.
- Strategic Adjustment
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Changing plan mid-game in response to what the board and the opponent reveal.
- Resourcefulness
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Extracting maximum value from a limited set of options.
- Reading the Opponent
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Inferring the opponent's hand and intent from their plays and hesitations.
- Bluff
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Representing a card or a plan you do not hold, in order to change the opponent's decision.
- Sunk Cost
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Continuing to commit to a losing line because of what has already been invested in it.
5 further concepts are catalogued but not yet published here: their definitions await the author, and a placeholder would be worse than an omission.
