Drown in the Loch — ruling 1

For spells with {X} in their mana costs, use the value chosen for X to determine the spell's mana value.

Drown in the Loch — ruling 2

If a creature on the battlefield has {X} in its mana cost, X is considered to be 0.

Drown in the Loch : règles, fonctionnement et interactions (MTG)

Drown in the Loch 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

Choose one — • Counter target spell with mana value less than or equal to the number of cards in its controller's graveyard. • Destroy target creature with mana value less than or equal to the number of cards in its controller's graveyard.

How it works : Drown in the Loch

Original English text — Wizards of the Coast / Scryfall

#1October 4, 2019· Wizards of the Coast
For spells with in their mana costs, use the value chosen for X to determine the spell's mana value.
No other card is named in this ruling.
#2October 4, 2019· Wizards of the Coast
If a creature on the battlefield has in its mana cost, X is considered to be 0.
No other card is named in this ruling.