From MTG Salvation Wiki
Source, in the context of Magic rules, can mean one of two things:
From the Comprehensive Rules
- Source of an Ability
- The source of an ability is the object that generated it. See rule 402, “Abilities,” and rule 200.7.
|
From the Comprehensive Rules
- Source of Damage
- The source of damage is the object that dealt it. If an effect requires a player to choose a source of damage, he or she may choose a permanent, a spell on the stack (including one that creates a permanent), or any object referred to by an object on the stack (including a creature that assigned combat damage on the stack, even if the creature is no longer in play or is no longer a creature). A source doesn’t need to be capable of dealing damage to be a legal choice. See rule 419.8, “Sources of Damage.”
|
From the Comprehensive Rules
- 419.8. Sources of Damage
- 419.8a Some effects apply to damage from a source—for example, “The next time a red source of your choice would deal damage to you this turn, prevent that damage.” If an effect requires a player to choose a source, he or she may choose a permanent; a spell on the stack (including an artifact, creature, enchantment, planeswalker spell); any card or permanent referred to by an object on the stack; or a creature that assigned combat damage on the stack, even if the creature is no longer in play or is no longer a creature. The source is chosen when the effect is created. If the player chooses a permanent, the prevention will apply to the next damage from that permanent, regardless of whether it’s from one of that permanent’s abilities or combat damage dealt by it. If the player chooses an artifact, creature, enchantment, planeswalker spell, the prevention will apply to any damage from that spell and from the permanent that it becomes when it resolves.
- 419.8b Some effects from spells and abilities prevent or replace damage from sources with certain properties, such as a creature or a source of a particular color. When the source would deal damage, the “shield” rechecks the source’s properties. If the properties no longer match, the damage isn’t prevented or replaced. If for any reason the shield prevents no damage or replaces no damage, the shield isn’t used up.
- 419.8c Some effects from static abilities prevent or replace damage from sources with certain properties. For these effects, the prevention or replacement applies to sources that are permanents with that property and to any sources that aren’t in play that have that property.
|
