Rishadan Port — ruling 1

Once you announce that you're casting a spell or activating an ability, no player may take other actions until the spell or ability has been paid for. Notably, players can't try to tap your lands to stop you from paying.

Rishadan Port : règles, fonctionnement et interactions (MTG)

Rishadan Port 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

: Add . , : Tap target land.

How it works : Rishadan Port

Original English text — Wizards of the Coast / Scryfall

#1March 16, 2018· Wizards of the Coast
Once you announce that you're casting a spell or activating an ability, no player may take other actions until the spell or ability has been paid for. Notably, players can't try to tap your lands to stop you from paying.
No other card is named in this ruling.