The Book of Exalted Deeds

At the beginning of your end step, if you gained 3 or more life this turn, create a 3/3 white Angel creature token with flying. , , Exile The Book of Exalted Deeds: Put an enlightened counter on target Angel. It gains "You can't lose the game and your opponents can't win the game." Activate only as a sorcery.

CMC

Set

PAFR

Rarity

mythic

Price

—

FORMATS

CommanderLEGAL

Brawl (Historic)LEGAL

DraftNOT LEGAL

StandardNOT LEGAL

ModernLEGAL

PioneerLEGAL

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WWizards of the Coast2021-07-23
Official Ruling
The Angel won't lose the ability it gains if it stops being an Angel after the ability resolves.
WWizards of the Coast2021-07-23
Official Ruling
The enlightenment counter placed by the last ability serves as a memory aid. It isn't connected to the granted ability. The Angel keeps that ability even if it loses the counter. Similarly, if the counter is somehow moved to another permanent, that permanent doesn't gain the ability.

Rulings via Scryfall

COMMENTS · 1

WO
Wizards of the Coast2021-07-14
The Book of Exalted Deeds was banned in other on July 14, 2021. Standard 2022: When The Book of Exalted Deeds is combined with Faceless Haven, a player could control a land which prevented them from losing the game and it was highly unlikely the opponent had a way to remove it. While this deck was not dominant either by win rate or percentage of players playing the combo, running into it was a very frustrating experience. If both players were using it, the game would have no way to end until one player finally decided to concede, which is not the game play experience we are aiming to provide. Source: https://magic.wizards.com/en/news/magic-digital/mtg-arena-announcements-july-14-2021