Erkenbrand, Lord of Westfold — ruling 1

Erkenbrand, Lord of Westfold's triggered ability affects only creatures you control at the time it resolves. Any creatures that come under your control later in the turn won't be affected.

Erkenbrand, Lord of Westfold : règles, fonctionnement et interactions (MTG)

Erkenbrand, Lord of Westfold 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 Erkenbrand or another Human you control enters, creatures you control get +1/+0 until end of turn.

How it works : Erkenbrand, Lord of Westfold

Original English text — Wizards of the Coast / Scryfall

#1June 16, 2023· Wizards of the Coast
Erkenbrand, Lord of Westfold's triggered ability affects only creatures you control at the time it resolves. Any creatures that come under your control later in the turn won't be affected.
No other card is named in this ruling.