Szat's Will — ruling 1

Each opponent considers their creatures independently. For example, if one opponent controls creatures with powers 4 and 5, and another opponent controls creatures with powers 2 and 7, the creatures with powers 5 and 7 will be sacrificed.

Szat's Will — ruling 2

If an opponent controls more than one creature with the greatest power among creatures they control, they choose which one to sacrifice.

Szat's Will — ruling 3

If both modes are chosen, they happen in the stated order. Any creature cards that end up in an opponent's graveyard because they were sacrificed for the first mode will be exiled as the instructions for the second mode are followed.

Szat's Will — ruling 4

For the second mode, use the powers of the creature cards as they existed in the graveyard to determine the value of X.

Szat's Will — ruling 5

If both modes are chosen, and an opponent sacrifices a creature token to the first mode, that token will be in the graveyard as the instructions in the second mode are followed. As it's not a creature card, it won't be exiled, and it won't be considered for determining the value of X. The token will cease to exist after Szat's Will resolves.

Szat's Will — ruling 6

Even though the card is named after a specific character, controlling any commander will satisfy its condition.

Szat's Will — ruling 7

There's no extra bonus if you control more than one commander.

Szat's Will — ruling 8

The commander you control doesn't have to be your commander.

Szat's Will : règles, fonctionnement et interactions (MTG)

Szat's Will 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 one. If you control a commander as you cast this spell, you may choose both instead. • Each opponent sacrifices a creature they control with the greatest power. • Exile all opponents' graveyards, then create X 0/1 black Thrull creature tokens, where X is the greatest power among creature cards exiled this way.

How it works : Szat's Will

Original English text — Wizards of the Coast / Scryfall

#1November 10, 2020· Wizards of the Coast
Each opponent considers their creatures independently. For example, if one opponent controls creatures with powers 4 and 5, and another opponent controls creatures with powers 2 and 7, the creatures with powers 5 and 7 will be sacrificed.
No other card is named in this ruling.
#2November 10, 2020· Wizards of the Coast
If an opponent controls more than one creature with the greatest power among creatures they control, they choose which one to sacrifice.
No other card is named in this ruling.
#3November 10, 2020· Wizards of the Coast
If both modes are chosen, they happen in the stated order. Any creature cards that end up in an opponent's graveyard because they were sacrificed for the first mode will be exiled as the instructions for the second mode are followed.
No other card is named in this ruling.
#4November 10, 2020· Wizards of the Coast
For the second mode, use the powers of the creature cards as they existed in the graveyard to determine the value of X.
No other card is named in this ruling.
#5November 10, 2020· Wizards of the Coast
If both modes are chosen, and an opponent sacrifices a creature token to the first mode, that token will be in the graveyard as the instructions in the second mode are followed. As it's not a creature card, it won't be exiled, and it won't be considered for determining the value of X. The token will cease to exist after Szat's Will resolves.
No other card is named in this ruling.
#6November 10, 2020· Wizards of the Coast
Even though the card is named after a specific character, controlling any commander will satisfy its condition.
No other card is named in this ruling.
#7November 10, 2020· Wizards of the Coast
There's no extra bonus if you control more than one commander.
No other card is named in this ruling.
#8November 10, 2020· Wizards of the Coast
The commander you control doesn't have to be your commander.
No other card is named in this ruling.
#9November 10, 2020· Wizards of the Coast
Once you've announced that you're casting a spell, players can't take any actions until you've finished doing so. Notably, opponents can't try to remove your commander to change how many modes you may choose.
No other card is named in this ruling.
#10November 10, 2020· Wizards of the Coast
Once you've chosen both modes for the spell, it doesn't matter whether you continue to control a commander. This is true even if you somehow no longer control a commander as you finish casting the spell.
No other card is named in this ruling.