Forgehammer Centurion — ruling 1

You don't choose a target for Forgehammer Centurion's last ability at the time it triggers. Rather, a second "reflexive" ability triggers when you remove two oil counters this way. You choose a target for that ability as it goes on the stack. Each player may respond to this triggered ability as normal.

Forgehammer Centurion : règles, fonctionnement et interactions (MTG)

Forgehammer Centurion 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

Whenever another creature or artifact you control is put into a graveyard from the battlefield, put an oil counter on this creature. Whenever this creature attacks, you may remove two oil counters from it. When you do, target creature can't block this turn.

How it works : Forgehammer Centurion

Original English text — Wizards of the Coast / Scryfall

#1February 4, 2023· Wizards of the Coast
You don't choose a target for Forgehammer Centurion's last ability at the time it triggers. Rather, a second "reflexive" ability triggers when you remove two oil counters this way. You choose a target for that ability as it goes on the stack. Each player may respond to this triggered ability as normal.
No other card is named in this ruling.