Curse of Vitality — ruling 1

If you enchant yourself with one of these Curses, you’ll get its effects whenever another player attacks you.

Curse of Vitality — ruling 2

Each Curse’s ability triggers only once, no matter how many creatures are attacking the enchanted player.

Curse of Vitality — ruling 3

A player is attacking another player if they control a creature that’s attacking that player. If no creatures are attacking the enchanted player as a Curse’s ability resolves (most likely because they’ve left the battlefield), only the Curse’s controller performs its actions.

Curse of Vitality — ruling 4

The triggered ability of these Curses won’t trigger if only a planeswalker controlled by the enchanted player is attacked.

Curse of Vitality : règles, fonctionnement et interactions (MTG)

Curse of Vitality 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

Enchant player Whenever enchanted player is attacked, you gain 2 life. Each opponent attacking that player does the same.

How it works : Curse of Vitality

Original English text — Wizards of the Coast / Scryfall

#1August 25, 2017· Wizards of the Coast
If you enchant yourself with one of these Curses, you’ll get its effects whenever another player attacks you.
No other card is named in this ruling.
#2August 25, 2017· Wizards of the Coast
Each Curse’s ability triggers only once, no matter how many creatures are attacking the enchanted player.
No other card is named in this ruling.
#3August 25, 2017· Wizards of the Coast
A player is attacking another player if they control a creature that’s attacking that player. If no creatures are attacking the enchanted player as a Curse’s ability resolves (most likely because they’ve left the battlefield), only the Curse’s controller performs its actions.
No other card is named in this ruling.
#4August 25, 2017· Wizards of the Coast
The triggered ability of these Curses won’t trigger if only a planeswalker controlled by the enchanted player is attacked.
No other card is named in this ruling.