Guardian of the Great Door — ruling 1

You can tap any four untapped artifacts, creatures, and/or lands you control, including creatures you haven't controlled continuously since the beginning of your most recent turn, to pay the additional cost to cast Guardian of the Great Door.

Guardian of the Great Door : règles, fonctionnement et interactions (MTG)

Guardian of the Great Door 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

As an additional cost to cast this spell, tap four untapped artifacts, creatures, and/or lands you control. Flying

How it works : Guardian of the Great Door

Original English text — Wizards of the Coast / Scryfall

#1November 10, 2023· Wizards of the Coast
You can tap any four untapped artifacts, creatures, and/or lands you control, including creatures you haven't controlled continuously since the beginning of your most recent turn, to pay the additional cost to cast Guardian of the Great Door.
No other card is named in this ruling.