Masako the Humorless — ruling 1

Masako allows tapped creatures to block only if they could otherwise block. It doesn’t allow creatures that “can’t block” to block, nonflying creatures to block fliers, etc.

Masako the Humorless : règles, fonctionnement et interactions (MTG)

Masako the Humorless 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

Flash Tapped creatures you control can block as though they were untapped.

How it works : Masako the Humorless

Original English text — Wizards of the Coast / Scryfall

#1December 1, 2004· Wizards of the Coast
Masako allows tapped creatures to block only if they could otherwise block. It doesn’t allow creatures that “can’t block” to block, nonflying creatures to block fliers, etc.
No other card is named in this ruling.