Mask of Law and Grace — ruling 1

If a text-changing effect is used to change one of the color words so it grants Protection from white, then it will cause itself to be put into the graveyard.

Mask of Law and Grace : règles, fonctionnement et interactions (MTG)

Mask of Law and Grace is one of those cards players keep asking about. Here is, in plain words, what its official text says, the rulings published by Wizards of the Coast, and the combos players actually run.

Official card text

Enchant creature Enchanted creature has protection from black and from red.

How it works : Mask of Law and Grace

Original English text — Wizards of the Coast / Scryfall

#1October 4, 2004· Wizards of the Coast
If a text-changing effect is used to change one of the color words so it grants Protection from white, then it will cause itself to be put into the graveyard.
No other card is named in this ruling.