Moonbow Illusionist — ruling 1

Only the targeted land is affected.

Moonbow Illusionist — ruling 2

The land’s name as well as any supertype it might have (such as legendary) remains unchanged.

Moonbow Illusionist : règles, fonctionnement et interactions (MTG)

Moonbow Illusionist 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

Flying , Return a land you control to its owner's hand: Target land becomes the basic land type of your choice until end of turn.

How it works : Moonbow Illusionist

Original English text — Wizards of the Coast / Scryfall

#1June 1, 2005· Wizards of the Coast
Only the targeted land is affected.
No other card is named in this ruling.
#2June 1, 2005· Wizards of the Coast
The land’s name as well as any supertype it might have (such as legendary) remains unchanged.
No other card is named in this ruling.