Inescapable Brute — ruling 1

If Inescapable Brute is attacking, the defending player must assign at least one blocker to it during the declare blockers step if that player controls any creatures that could block Inescapable Brute.

Inescapable Brute : règles, fonctionnement et interactions (MTG)

Inescapable Brute 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

Wither (This deals damage to creatures in the form of -1/-1 counters.) This creature must be blocked if able.

How it works : Inescapable Brute

Original English text — Wizards of the Coast / Scryfall

#1May 1, 2008· Wizards of the Coast
If Inescapable Brute is attacking, the defending player must assign at least one blocker to it during the declare blockers step if that player controls any creatures that could block Inescapable Brute.
No other card is named in this ruling.