Pyre Hound — ruling 1

Pyre Hound's triggered ability resolves before the spell that caused it to trigger. The ability will resolve even if that spell is countered.

Pyre Hound : règles, fonctionnement et interactions (MTG)

Pyre Hound 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

Trample Whenever you cast an instant or sorcery spell, put a +1/+1 counter on this creature.

How it works : Pyre Hound

Original English text — Wizards of the Coast / Scryfall

#1March 16, 2018· Wizards of the Coast
Pyre Hound's triggered ability resolves before the spell that caused it to trigger. The ability will resolve even if that spell is countered.
No other card is named in this ruling.