Anointed Peacekeeper — ruling 1

You can choose any card name, even if that card doesn’t normally have an activated ability. You’re not limited to the names of cards you saw in the opponent’s hand.

Anointed Peacekeeper — ruling 2

You can’t choose the name of a token unless that token has the same name as a card.

Anointed Peacekeeper — ruling 3

Anointed Peacekeeper’s third ability applies to all opponents, not just the opponent whose hand you looked at.

Anointed Peacekeeper — ruling 4

Activated abilities contain a colon. They’re generally written “[Cost]: [Effect].” Some keyword abilities (such as equip) are activated abilities and will have colons in their reminder text. Triggered abilities (starting with “when,” “whenever,” or “at”) are unaffected by the last ability of Anointed Peacekeeper.

Anointed Peacekeeper — ruling 5

An activated mana ability is one that produces mana as it resolves, not one that costs mana to activate.

Anointed Peacekeeper — ruling 6

Anointed Peacekeeper’s last ability affects cards regardless of what zone they’re in. This includes cards in hands, cards in the graveyards, and exiled cards.

Anointed Peacekeeper : règles, fonctionnement et interactions (MTG)

Anointed Peacekeeper 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

Vigilance As this creature enters, look at an opponent's hand, then choose any card name. Spells your opponents cast with the chosen name cost more to cast. Activated abilities of sources with the chosen name cost more to activate unless they're mana abilities.

How it works : Anointed Peacekeeper

Original English text — Wizards of the Coast / Scryfall

#1September 9, 2022· Wizards of the Coast
You can choose any card name, even if that card doesn’t normally have an activated ability. You’re not limited to the names of cards you saw in the opponent’s hand.
No other card is named in this ruling.
#2September 9, 2022· Wizards of the Coast
You can’t choose the name of a token unless that token has the same name as a card.
No other card is named in this ruling.
#3September 9, 2022· Wizards of the Coast
Anointed Peacekeeper’s third ability applies to all opponents, not just the opponent whose hand you looked at.
No other card is named in this ruling.
#4September 9, 2022· Wizards of the Coast
Activated abilities contain a colon. They’re generally written “[Cost]: [Effect].” Some keyword abilities (such as equip) are activated abilities and will have colons in their reminder text. Triggered abilities (starting with “when,” “whenever,” or “at”) are unaffected by the last ability of Anointed Peacekeeper.
No other card is named in this ruling.
#5September 9, 2022· Wizards of the Coast
An activated mana ability is one that produces mana as it resolves, not one that costs mana to activate.
No other card is named in this ruling.
#6September 9, 2022· Wizards of the Coast
Anointed Peacekeeper’s last ability affects cards regardless of what zone they’re in. This includes cards in hands, cards in the graveyards, and exiled cards.
No other card is named in this ruling.