Blizzard Brawl — ruling 1

You can’t cast Blizzard Brawl unless you choose both a creature you control and one you don’t control as targets.

Blizzard Brawl — ruling 2

Check whether you control three or more snow permanents as Blizzard Brawl is resolving to see if the target creature you control gets +1/+0 and gains indestructible. That creature will still fight even if it doesn’t get those bonuses.

Blizzard Brawl — ruling 3

If either target is an illegal target as Blizzard Brawl tries to resolve, neither creature will fight and no damage will be dealt.

Blizzard Brawl — ruling 4

If the creature you control is still a legal target as Blizzard Brawl tries to resolve but the target creature you don’t control isn’t, the creature you control will still get the bonuses until end of turn.

Blizzard Brawl — ruling 5

Snow is a supertype, not a card type. It has no rules meaning or function by itself, but spells and abilities may refer to it.

Blizzard Brawl — ruling 6

The {S} symbol is a generic mana symbol. It represents a cost that can be paid by one mana that was produced by a snow source. That mana can be any color or colorless.

Blizzard Brawl — ruling 7

Snow isn’t a type of mana. If an effect says you may spend mana as though it were any type, you can’t pay for {S} using mana that wasn’t produced by a snow source.

Blizzard Brawl — ruling 8

Some cards have additional effects for each {S} spent to cast them. You can cast these spells even if you don’t spend any snow mana to cast them; their additional effects simply won’t do anything.

Blizzard Brawl : règles, fonctionnement et interactions (MTG)

Blizzard Brawl 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

Choose target creature you control and target creature you don't control. If you control three or more snow permanents, the creature you control gets +1/+0 and gains indestructible until end of turn. Then those creatures fight each other. (Each deals damage equal to its power to the other.)

How it works : Blizzard Brawl

Original English text — Wizards of the Coast / Scryfall

#1February 5, 2021· Wizards of the Coast
You can’t cast Blizzard Brawl unless you choose both a creature you control and one you don’t control as targets.
No other card is named in this ruling.
#2February 5, 2021· Wizards of the Coast
Check whether you control three or more snow permanents as Blizzard Brawl is resolving to see if the target creature you control gets +1/+0 and gains indestructible. That creature will still fight even if it doesn’t get those bonuses.
No other card is named in this ruling.
#3February 5, 2021· Wizards of the Coast
If either target is an illegal target as Blizzard Brawl tries to resolve, neither creature will fight and no damage will be dealt.
No other card is named in this ruling.
#4February 5, 2021· Wizards of the Coast
If the creature you control is still a legal target as Blizzard Brawl tries to resolve but the target creature you don’t control isn’t, the creature you control will still get the bonuses until end of turn.
No other card is named in this ruling.
#5February 5, 2021· Wizards of the Coast
Snow is a supertype, not a card type. It has no rules meaning or function by itself, but spells and abilities may refer to it.
No other card is named in this ruling.
#6February 5, 2021· Wizards of the Coast
The symbol is a generic mana symbol. It represents a cost that can be paid by one mana that was produced by a snow source. That mana can be any color or colorless.
No other card is named in this ruling.
#7February 5, 2021· Wizards of the Coast
Snow isn’t a type of mana. If an effect says you may spend mana as though it were any type, you can’t pay for using mana that wasn’t produced by a snow source.
No other card is named in this ruling.
#8February 5, 2021· Wizards of the Coast
Some cards have additional effects for each spent to cast them. You can cast these spells even if you don’t spend any snow mana to cast them; their additional effects simply won’t do anything.
No other card is named in this ruling.
#9February 5, 2021· Wizards of the Coast
The Kaldheim set doesn’t have any cards with mana costs that include , but some previous sets do. If an effect says such a spell costs less to cast, that reduction doesn’t apply to any costs. This is also true for activated abilities that include in their activation costs and effects that reduce those costs.
No other card is named in this ruling.