Hurska Sweet-Tooth — ruling 1

You don't choose a target for Hurska's last ability at the time it triggers. Rather, a second "reflexive" ability triggers when you pay {G/W} this way. You choose a target for that ability as it goes on the stack. Each player may respond to this triggered ability as normal.

Hurska Sweet-Tooth — ruling 2

The value of X is calculated only once, as the reflexive triggered ability resolves.

Hurska Sweet-Tooth : règles, fonctionnement et interactions (MTG)

Hurska Sweet-Tooth 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

Whenever Hurska attacks, create a Food token. (It's an artifact with ", , Sacrifice this token: You gain 3 life.") Whenever you gain life, you may pay . When you do, target creature gets +X/+X until end of turn, where X is the amount of life you gained.

How it works : Hurska Sweet-Tooth

Original English text — Wizards of the Coast / Scryfall

#1November 8, 2024· Wizards of the Coast
You don't choose a target for Hurska's last ability at the time it triggers. Rather, a second "reflexive" ability triggers when you pay this way. You choose a target for that ability as it goes on the stack. Each player may respond to this triggered ability as normal.
No other card is named in this ruling.
#2November 8, 2024· Wizards of the Coast
The value of X is calculated only once, as the reflexive triggered ability resolves.
No other card is named in this ruling.