Tale of Momo — ruling 1

To determine the total cost of a spell, start with the mana cost or alternative cost you're paying, add any cost increases, then apply any cost reductions (such as that of Tale of Momo's first ability). The mana value of the spell is determined by only its mana cost, no matter what the total cost to cast that spell was.

Tale of Momo : règles, fonctionnement et interactions (MTG)

Tale of Momo 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

This spell costs less to cast if a creature left the battlefield under your control this turn. Search your library and/or graveyard for an Ally creature card, reveal it, and put it into your hand. If you search your library this way, shuffle.

How it works : Tale of Momo

Original English text — Wizards of the Coast / Scryfall

#1October 2, 2025· Wizards of the Coast
To determine the total cost of a spell, start with the mana cost or alternative cost you're paying, add any cost increases, then apply any cost reductions (such as that of Tale of Momo's first ability). The mana value of the spell is determined by only its mana cost, no matter what the total cost to cast that spell was.
No other card is named in this ruling.