Protection is a keyword ability that grants several different effects to the permanent or player it is affecting. It was first introduced in Alpha and still sees frequent use on cards. It is found most often in white, but all colors have at least a few cards that grant protection from their enemy colors.
The current reminder text for protection reads "This [object] can't be blocked, targeted, dealt damage, or enchanted by anything [quality]."
The effects of protection are often described using the mnemonic DEBT. The permanent or player with protection can't be:
- Damaged by sources with the given quality (all such damage is prevented)
- Enchanted or equipped by permanents with the given quality
- Blocked by creatures with the given quality (if it's a creature)
- Targeted by spells of the given quality, or abilities with sources of the given quality.
From the Comprehensive Rules:
- 702.16. Protection
- 702.16a Protection is a static ability, written “Protection from [quality].” This quality is usually a color (as in “protection from black”) but can be any characteristic value. If the quality happens to be a card name, it is treated as such only if the protection ability specifies that the quality is a name. If the quality is a card type, subtype, or supertype, the ability applies to sources that are permanents with that card type, subtype, or supertype and to any sources not on the battlefield that are of that card type, subtype, or supertype. This is an exception to rule 109.2.
- 702.16b A permanent or player with protection can’t be targeted by spells with the stated quality and can’t be targeted by abilities from a source with the stated quality.
- 702.16c A permanent or player with protection can’t be enchanted by Auras that have the stated quality. Such Auras attached to the permanent or player with protection will be put into their owners’ graveyards as a state-based action. (See rule 704, “State-Based Actions.”)
- 702.16d A permanent with protection can’t be equipped by Equipment that have the stated quality or fortified by Fortifications that have the stated quality. Such Equipment or Fortifications become unattached from that permanent as a state-based action, but remain on the battlefield. (See rule 704, “State-Based Actions.”)
- 702.15e Any damage that would be dealt by sources that have the stated quality to a permanent or player with protection is prevented.
- 702.16f Attacking creatures with protection can’t be blocked by creatures that have the stated quality.
- 702.16g “Protection from [quality A] and from [quality B]” is shorthand for “protection from [quality A]” and “protection from [quality B]”; it behaves as two separate protection abilities. If an effect causes an object with such an ability to lose protection from [quality A], for example, that object would still have protection from [quality B].
- 702.16h “Protection from all [characteristic]” is shorthand for “protection from [quality A],” “protection from [quality B],” and so on for each possible quality the listed characteristic could have; it behaves as multiple separate protection abilities. If an effect causes an object with such an ability to lose protection from [quality A], for example, that object would still have protection from [quality B], [quality C], and so on.
- 702.16i “Protection from everything” is a variant of the protection ability. A permanent with protection from everything has protection from each object regardless of that object’s characteristic values. Such a permanent can’t be targeted by spells or abilities, enchanted by Auras, equipped by Equipment, fortified by Fortifications, or blocked by creatures, and all damage that would be dealt to it is prevented.
- 702.16j Multiple instances of protection from the same quality on the same permanent or player are redundant.
Protection is commonly misunderstood as being complete exemption from effects created by cards with the quality being protected from, which would allow, for example, a creature with protection from white to survive the effect of Wrath of God. This is not the case, however, as anything other than the specific things mentioned above is not hampered by protection in any way. Thus, as Wrath of God does not attempt to damage or target the creature, it will still be destroyed.
- White Knight -
Creature — Human Knight
First strike (This creature deals combat damage before creatures without first strike.)
Protection from black (This creature can't be blocked, targeted, dealt damage, or enchanted by anything black.)
Protection always appears in the form "protection from" followed by one or more qualities or characteristics. The first qualities were colors, but other qualities were introduced later, as detailed in the table below (sorted by default in chronological order):
 Notes and references
 External link