Resounding Thunder — ruling 1

When you cycle this card, first the cycling ability goes on the stack, then the triggered ability goes on the stack on top of it. The triggered ability will resolve before you draw a card from the cycling ability.

Resounding Thunder — ruling 2

The cycling ability and the triggered ability are separate. If the triggered ability doesn't resolve (because, for example, it has been countered, or all of its targets have become illegal), the cycling ability will still resolve, and you'll draw a card.

Resounding Thunder — ruling 3

You can cycle this card even if there are no legal targets for the triggered ability.

Resounding Thunder : règles, fonctionnement et interactions (MTG)

Resounding Thunder 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

Resounding Thunder deals 3 damage to any target. Cycling (, Discard this card: Draw a card.) When you cycle this card, it deals 6 damage to any target.

How it works : Resounding Thunder

Original English text — Wizards of the Coast / Scryfall

#1December 8, 2022· Wizards of the Coast
When you cycle this card, first the cycling ability goes on the stack, then the triggered ability goes on the stack on top of it. The triggered ability will resolve before you draw a card from the cycling ability.
No other card is named in this ruling.
#2December 8, 2022· Wizards of the Coast
The cycling ability and the triggered ability are separate. If the triggered ability doesn't resolve (because, for example, it has been countered, or all of its targets have become illegal), the cycling ability will still resolve, and you'll draw a card.
No other card is named in this ruling.
#3December 8, 2022· Wizards of the Coast
You can cycle this card even if there are no legal targets for the triggered ability.
No other card is named in this ruling.