Vedalken Plotter — ruling 1

If either land becomes an illegal target (or leaves the battlefield) before the ability resolves, the exchange won't happen. There's no way for you to gain a land without losing another one in the process.

Vedalken Plotter : règles, fonctionnement et interactions (MTG)

Vedalken Plotter 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, exchange control of target land you control and target land an opponent controls.

How it works : Vedalken Plotter

Original English text — Wizards of the Coast / Scryfall

#1February 1, 2006· Wizards of the Coast
If either land becomes an illegal target (or leaves the battlefield) before the ability resolves, the exchange won't happen. There's no way for you to gain a land without losing another one in the process.
No other card is named in this ruling.