Ring of Ma'rûf — ruling 1

Ring of Ma’rûf works a little differently than the Wishes from others sets. Rather than letting you simply put a card into your hand from outside the game, this ability replaces your next draw. If you wouldn’t draw a card during the rest of the turn, the ability won’t have any effect.

Ring of Ma'rûf : règles, fonctionnement et interactions (MTG)

Ring of Ma'rûf 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

, , Exile this artifact: The next time you would draw a card this turn, instead put a card you own from outside the game into your hand.

How it works : Ring of Ma'rûf

Original English text — Wizards of the Coast / Scryfall

#1September 16, 2007· Wizards of the Coast
Ring of Ma’rûf works a little differently than the Wishes from others sets. Rather than letting you simply put a card into your hand from outside the game, this ability replaces your next draw. If you wouldn’t draw a card during the rest of the turn, the ability won’t have any effect.
No other card is named in this ruling.