Rank and File — ruling 1

The -1/-1 penalty is given to all green creatures on the battlefield when the triggered ability resolves. It will not apply to green creatures that enter later in the turn.

Rank and File : règles, fonctionnement et interactions (MTG)

Rank and File 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

When this creature enters, green creatures get -1/-1 until end of turn.

How it works : Rank and File

Original English text — Wizards of the Coast / Scryfall

#1October 4, 2004· Wizards of the Coast
The -1/-1 penalty is given to all green creatures on the battlefield when the triggered ability resolves. It will not apply to green creatures that enter later in the turn.
No other card is named in this ruling.