Muse Seeker — ruling 1

An opus ability resolves before the spell that caused it to trigger. It resolves even if that spell is countered or otherwise leaves the stack.

Muse Seeker : règles, fonctionnement et interactions (MTG)

Muse Seeker 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

Opus — Whenever you cast an instant or sorcery spell, draw a card. Then discard a card unless five or more mana was spent to cast that spell.

How it works : Muse Seeker

Original English text — Wizards of the Coast / Scryfall

#1March 20, 2026· Wizards of the Coast
An opus ability resolves before the spell that caused it to trigger. It resolves even if that spell is countered or otherwise leaves the stack.
No other card is named in this ruling.