Mortal Flesh Is Weak — ruling 1

For a player’s life total to become a certain number that’s lower than their current life total, what actually happens is that the player loses the appropriate amount of life. For example, if the lowest life total among your opponents is 5 and another opponent has 12 life, this scheme’s ability will cause that player to lose 7 life. Abilities that interact with life loss will interact with this effect accordingly.

Mortal Flesh Is Weak : règles, fonctionnement et interactions (MTG)

Mortal Flesh Is Weak 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

When you set this scheme in motion, each opponent's life total becomes the lowest life total among your opponents.

How it works : Mortal Flesh Is Weak

Original English text — Wizards of the Coast / Scryfall

#1June 15, 2010· Wizards of the Coast
For a player’s life total to become a certain number that’s lower than their current life total, what actually happens is that the player loses the appropriate amount of life. For example, if the lowest life total among your opponents is 5 and another opponent has 12 life, this scheme’s ability will cause that player to lose 7 life. Abilities that interact with life loss will interact with this effect accordingly.
No other card is named in this ruling.