Gwafa Hazid, Profiteer — ruling 1

If Gwafa Hazid leaves the battlefield, any bribery counters will remain where they are. However, without a Gwafa Hazid on the battlefield, creatures with bribery counters on them can attack and block as normal. If another Gwafa Hazid enters, its ability will affect all creatures with bribery counters on them, including the ones that received counters from a different Gwafa Hazid.

Gwafa Hazid, Profiteer — ruling 2

Creatures with bribery counters on them can't be declared as attackers or blockers. However, if a bribery counter is put on a creature that's already been declared as an attacker or blocker, that creature will continue to attack or block that combat.

Gwafa Hazid, Profiteer : règles, fonctionnement et interactions (MTG)

Gwafa Hazid, Profiteer 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

, : Put a bribery counter on target creature you don't control. Its controller draws a card. Creatures with bribery counters on them can't attack or block.

How it works : Gwafa Hazid, Profiteer

Original English text — Wizards of the Coast / Scryfall

#1February 1, 2009· Wizards of the Coast
If Gwafa Hazid leaves the battlefield, any bribery counters will remain where they are. However, without a Gwafa Hazid on the battlefield, creatures with bribery counters on them can attack and block as normal. If another Gwafa Hazid enters, its ability will affect all creatures with bribery counters on them, including the ones that received counters from a different Gwafa Hazid.
No other card is named in this ruling.
#2February 1, 2009· Wizards of the Coast
Creatures with bribery counters on them can't be declared as attackers or blockers. However, if a bribery counter is put on a creature that's already been declared as an attacker or blocker, that creature will continue to attack or block that combat.
No other card is named in this ruling.