Exquisite Firecraft — ruling 1

A spell or ability that counters spells can still target Exquisite Firecraft. When that spell or ability resolves, Exquisite Firecraft won't be countered if its spell mastery ability applies, but any additional effects of the countering spell or ability will still happen.

Exquisite Firecraft — ruling 2

Check to see if there are two or more instant and/or sorcery cards in your graveyard as the spell resolves to determine whether the spell mastery ability applies. The spell itself won't count because it's still on the stack as you make this check.

Exquisite Firecraft : règles, fonctionnement et interactions (MTG)

Exquisite Firecraft 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

Exquisite Firecraft deals 4 damage to any target. Spell mastery — If there are two or more instant and/or sorcery cards in your graveyard, this spell can't be countered.

How it works : Exquisite Firecraft

Original English text — Wizards of the Coast / Scryfall

#1March 19, 2021· Wizards of the Coast
A spell or ability that counters spells can still target Exquisite Firecraft. When that spell or ability resolves, Exquisite Firecraft won't be countered if its spell mastery ability applies, but any additional effects of the countering spell or ability will still happen.
No other card is named in this ruling.
#2June 22, 2015· Wizards of the Coast
Check to see if there are two or more instant and/or sorcery cards in your graveyard as the spell resolves to determine whether the spell mastery ability applies. The spell itself won't count because it's still on the stack as you make this check.
No other card is named in this ruling.