Temporal Firestorm — ruling 1

If a spell's kicker cost was paid, the spell is "kicked."

Temporal Firestorm — ruling 2

If a card or token enters as a copy of a permanent, the new permanent isn't kicked, even if the original was.

Temporal Firestorm — ruling 3

To determine a spell's total cost, start with the mana cost (or an alternative cost if another card's effect allows you to pay one instead), add any cost increases (such as kicker), then apply any cost reductions. The spell's mana value remains unchanged, no matter what the total cost to cast it was.

Temporal Firestorm — ruling 4

If you copy a kicked spell on the stack, the copy is also kicked. If the copied spell is a permanent spell, the token the copy of that spell becomes when it enters is also kicked.

Temporal Firestorm — ruling 5

The kicker ability doesn't let you pay a kicker cost more than once.

Temporal Firestorm — ruling 6

If you put a permanent with a kicker ability onto the battlefield without casting it, you can't kick it.

Temporal Firestorm — ruling 7

You may kick Temporal Firestorm only once for its {1}{W} cost and only once for its {1}{U} cost. You can kick it twice by paying {2}{W}{U}, but you can't kick it twice by paying {2}{W}{W} or {2}{U}{U}. You can't kick it more than twice. Notably, this means that X will always be either one or two if Temporal Firestorm was kicked.

Temporal Firestorm : règles, fonctionnement et interactions (MTG)

Temporal Firestorm 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

Kicker and/or (You may pay an additional and/or as you cast this spell.) Choose up to X creatures and/or planeswalkers you control, where X is the number of times this spell was kicked. Those permanents phase out. Temporal Firestorm deals 5 damage to each creature and each planeswalker.

How it works : Temporal Firestorm

Original English text — Wizards of the Coast / Scryfall

#1November 8, 2024· Wizards of the Coast
If a spell's kicker cost was paid, the spell is "kicked."
No other card is named in this ruling.
#2November 8, 2024· Wizards of the Coast
If a card or token enters as a copy of a permanent, the new permanent isn't kicked, even if the original was.
No other card is named in this ruling.
#3November 8, 2024· Wizards of the Coast
To determine a spell's total cost, start with the mana cost (or an alternative cost if another card's effect allows you to pay one instead), add any cost increases (such as kicker), then apply any cost reductions. The spell's mana value remains unchanged, no matter what the total cost to cast it was.
No other card is named in this ruling.
#4November 8, 2024· Wizards of the Coast
If you copy a kicked spell on the stack, the copy is also kicked. If the copied spell is a permanent spell, the token the copy of that spell becomes when it enters is also kicked.
No other card is named in this ruling.
#5November 8, 2024· Wizards of the Coast
The kicker ability doesn't let you pay a kicker cost more than once.
No other card is named in this ruling.
#6November 8, 2024· Wizards of the Coast
If you put a permanent with a kicker ability onto the battlefield without casting it, you can't kick it.
No other card is named in this ruling.
#7September 9, 2022· Wizards of the Coast
You may kick Temporal Firestorm only once for its cost and only once for its cost. You can kick it twice by paying , but you can't kick it twice by paying or . You can't kick it more than twice. Notably, this means that X will always be either one or two if Temporal Firestorm was kicked.
No other card is named in this ruling.