Fraying Omnipotence — ruling 1

The amounts that are lost are rounded up, not the amounts kept. For example, a player with 5 life, five cards in hand, and five creatures would lose 3 life, discard three cards, and sacrifice three creatures.

Fraying Omnipotence — ruling 2

Because the instructions are followed in order, abilities of the creatures a player will sacrifice may modify or trigger on losing life, discarding cards, and/or sacrificing creatures. Abilities that trigger this way will resolve after Fraying Omnipotence is done resolving.

Fraying Omnipotence — ruling 3

When Fraying Omnipotence resolves, first each player loses the appropriate amount of life at once. Next, the player whose turn it is chooses an appropriate number of cards in hand without revealing them, then each other player in turn order does the same, and then those cards are all discarded simultaneously. Then, the player whose turn it is chooses an appropriate number of creatures they control. Each other player in turn order does the same, knowing choices made by previous players. Finally, all of the chosen creatures are sacrificed simultaneously.

Fraying Omnipotence — ruling 4

In a Two-Headed Giant game, Fraying Omnipotence causes each player to lose half of their team’s life, rounded up. This means that teams at an even life total will have 0 life, and teams at an odd life total will have -1 life. The game then ends in a draw.

Fraying Omnipotence : règles, fonctionnement et interactions (MTG)

Fraying Omnipotence 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

Each player loses half their life, then discards half the cards in their hand, then sacrifices half the creatures they control of their choice. Round up each time.

How it works : Fraying Omnipotence

Original English text — Wizards of the Coast / Scryfall

#1July 13, 2018· Wizards of the Coast
The amounts that are lost are rounded up, not the amounts kept. For example, a player with 5 life, five cards in hand, and five creatures would lose 3 life, discard three cards, and sacrifice three creatures.
No other card is named in this ruling.
#2July 13, 2018· Wizards of the Coast
Because the instructions are followed in order, abilities of the creatures a player will sacrifice may modify or trigger on losing life, discarding cards, and/or sacrificing creatures. Abilities that trigger this way will resolve after Fraying Omnipotence is done resolving.
No other card is named in this ruling.
#3July 13, 2018· Wizards of the Coast
When Fraying Omnipotence resolves, first each player loses the appropriate amount of life at once. Next, the player whose turn it is chooses an appropriate number of cards in hand without revealing them, then each other player in turn order does the same, and then those cards are all discarded simultaneously. Then, the player whose turn it is chooses an appropriate number of creatures they control. Each other player in turn order does the same, knowing choices made by previous players. Finally, all of the chosen creatures are sacrificed simultaneously.
No other card is named in this ruling.
#4July 13, 2018· Wizards of the Coast
In a Two-Headed Giant game, Fraying Omnipotence causes each player to lose half of their team’s life, rounded up. This means that teams at an even life total will have 0 life, and teams at an odd life total will have -1 life. The game then ends in a draw.
No other card is named in this ruling.