Mercadian Atlas — ruling 1

It only checks if you played a land. Putting a land onto the battlefield by using an effect of another card does not count as “playing a land”.

Mercadian Atlas : règles, fonctionnement et interactions (MTG)

Mercadian Atlas 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

At the beginning of your end step, if you didn't play a land this turn, you may draw a card.

How it works : Mercadian Atlas

Original English text — Wizards of the Coast / Scryfall

#1October 4, 2004· Wizards of the Coast
It only checks if you played a land. Putting a land onto the battlefield by using an effect of another card does not count as “playing a land”.
No other card is named in this ruling.