Notes

Musuh besar Dark Arts/? Sacricifal Protection

Sacrificial protection is an ancient, powerful, and long-lasting counter-charm[2] that is endowed when one person ultimately sacrifices his or her own life willingly and out of deep and pure love to strongly save the life of one or more people.

When the person to make the sacrifice dies, the counter-charms is so powerful that the murderer can not touch the intended victim, as the protection lives on in their veins. Sacrificial protection can be conferred on a single beneficiary or on a group of them.
In cases involving a single person, the protection prevents whoever murdered the person who sacrificed their life from physically touching the person saved without experiencing excruciating pain, and will cause a Killing Curse cast at the saved person by the murderer to rebound.
In cases involving multiple beneficiaries, the extent of the protection is not known, but it seems that it is less than in single-beneficiary cases, so that spells cast by the murderer at those beneficiaries will simply wear off more quickly rather than be reflected back (although it is unknown how that would apply to the Killing Curse). However, the difference in the level of protection could also be attributed to whether or not the victim actually dies since in the only known case in which sacrificial protection was conferred to a group of people, the intended victim survived.

Another defensive effect of sacrificial protection binds the beneficiary to life when his or her blood is transferred to another person (perhaps this only works when the beneficiary's blood is transferred to the murderer) as long as that person lives. If the blood is transferred to the murderer, then the murderer will be able to overcome some aspects of the protection.

If the victim was related to the beneficiary, then a powerful charm can be cast upon the beneficiary to give them additional protection (although it is unknown how closely the two must be related for this charm to work). This charm prevents any harm from coming to the beneficiary from the murderer while they are in a blood-related relative's home.

However, in order for this charm's power to take effect, the living blood-relative must first take the saved person into their home willingly. Once activated, this bond of blood will prevent harm from coming to the beneficiary when they are in their relative's home but it will break automatically when the saved person moves out permanently or turns seventeen (the age of majority in the British wizarding world), whichever happens first.