Sprouting Vines — ruling 1

The copies are put directly onto the stack. They aren't cast and won't be counted by other spells with storm cast later in the turn.

Sprouting Vines — ruling 2

Spells cast from zones other than a player's hand and spells that were countered are counted by the storm ability.

Sprouting Vines — ruling 3

A copy of a spell can be countered like any other spell, but it must be countered individually. Countering a spell with storm won't affect the copies.

Sprouting Vines — ruling 4

The triggered ability that creates the copies can itself be countered by anything that can counter a triggered ability. If it is countered, no copies will be put onto the stack.

Sprouting Vines : règles, fonctionnement et interactions (MTG)

Sprouting Vines 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

Search your library for a basic land card, reveal that card, put it into your hand, then shuffle. Storm (When you cast this spell, copy it for each spell cast before it this turn.)

How it works : Sprouting Vines

Original English text — Wizards of the Coast / Scryfall

#1December 8, 2022· Wizards of the Coast
The copies are put directly onto the stack. They aren't cast and won't be counted by other spells with storm cast later in the turn.
No other card is named in this ruling.
#2December 8, 2022· Wizards of the Coast
Spells cast from zones other than a player's hand and spells that were countered are counted by the storm ability.
No other card is named in this ruling.
#3December 8, 2022· Wizards of the Coast
A copy of a spell can be countered like any other spell, but it must be countered individually. Countering a spell with storm won't affect the copies.
No other card is named in this ruling.
#4December 8, 2022· Wizards of the Coast
The triggered ability that creates the copies can itself be countered by anything that can counter a triggered ability. If it is countered, no copies will be put onto the stack.
No other card is named in this ruling.