Resources

Magic: The Gathering Comprehensive Rules Changes

Morningtide to Shadowmoor (Single Change View)

General changes

Old rule (Morningtide) New rule (Shadowmoor)

Mana

Mana is the energy used to play spells and is usually produced by lands. Mana is created by mana abilities (and sometimes by spells), and it can be used to pay costs immediately or can stay in the player's mana pool. See rule 406, "Mana Abilities." Colored mana costs, represented by colored mana symbols, can be paid only with the appropriate color of mana. Generic mana costs can be paid with any color of, or with colorless, mana. See rule 104.3. The spell or ability that adds mana to a mana pool may restrict how it can be used. An ability might produce mana that can be used only to play creature spells or only to pay activation costs. The type of mana a permanent "could produce" is the type of mana that any ability of that permanent can generate, taking into account any applicable replacement effects. If the type of mana can't be defined, there's no type of mana that that permanent could produce. The "type" of mana is its color, or lack thereof (for colorless mana).

Mana

Mana is the resource used to play spells and is usually produced by lands. Mana is created by mana abilities (and sometimes by spells), and it can be used to pay costs immediately or can stay in the player's mana pool. See rule 406, "Mana Abilities." The colors of mana are white, blue, black, red, and green. The types of mana are white, blue, black, red, green, and colorless. Colored mana costs, represented by colored mana symbols, can be paid only with the appropriate color of mana. Generic mana costs can be paid with any color of, or with colorless, mana. See rule 104.3. The spell or ability that adds mana to a mana pool may restrict how it can be used. An ability might produce mana that can be used only to play creature spells or only to pay activation costs. The type of mana a permanent "could produce" at any time includes any type of mana that an ability of that permanent could generate if it were to resolve at that time, taking into account any applicable replacement effects in any possible order. Ignore whether any costs of the ability could be paid. If no type of mana can be defined this way, there's no type of mana that that permanent could produce. To tap a permanent for mana is to play an activated ability of that permanent that includes the {T} symbol in its cost and produces mana as part of its effect.