Hour of Revelation 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
This spell costsless to cast if there are ten or more nonland permanents on the battlefield. Destroy all nonland permanents.
Complete guide
Hour of Revelation is a powerful board wipe that punishes players for over-extending their presence on the battlefield. As a pivotal story moment in the Amonkhet block, it offers a dramatic reset that can be cast for a surprisingly low cost in crowded games.
Massive Destruction for Less
Hour of Revelation is a sorcery that destroys all nonland permanents, including creatures, planeswalkers, artifacts, and enchantments. While its base cost is six mana, it features a built-in discount: if there are ten or more nonland permanents anywhere on the battlefield, the spell costs only three white mana to cast. This counts all nonland permanents controlled by all players, making it especially effective in multiplayer formats like Commander.
How it Resolves
First, the game checks the total number of nonland permanents to determine the cost. Once you announce you are casting the spell and the cost is locked in, you pay the mana. When the spell resolves, every permanent that is not a land is put into its owner's graveyard simultaneously. Note that permanents with Indestructible will remain on the battlefield, as this spell uses the 'destroy' keyword.
Common Mistakes
A common point of confusion involves the cost reduction timing. You determine the cost before you pay for the spell. If you have exactly ten nonland permanents and some of those are mana sources (like mana rocks or tokens), you can sacrifice them or tap them for mana to pay the cost even though the count drops below ten during the payment process. Additionally, remember that lands are strictly excluded from this destruction, even if they are also creatures or artifacts.
Strategic Timing
Because Hour of Revelation hits every nonland card type, it is a total reset button. Unlike targeted wipes, this is best used when you are behind on multiple fronts, such as facing an army of creatures and a powerful array of enchantments. It is most efficient in games where the board state has become cluttered, allowing you to hold up mana for a follow-up play after the board is cleared.
Interaction examples
While Austere Command offers flexibility by choosing specific categories to destroy, it always costs six mana. Hour of Revelation destroys everything at once and can be cast for just three mana if the board is busy, providing a more mana-efficient reset in emergency situations.
Farewell is often preferred for its ability to exile permanents and hit graveyards, bypassing 'dies' triggers and Indestructible. However, Hour of Revelation is a 'destroy' effect; if your opponent has Indestructible creatures, Hour of Revelation will fail to remove them, whereas Farewell would successfully exile them.
Imagine the board has nine creatures and you control one Sol Ring. Because there are ten nonland permanents total, Hour of Revelation costs only {W}{W}{W}. You can tap the Sol Ring for two colorless mana toward your pool and then use three white mana to finish the payment. The Sol Ring is destroyed along with the creatures when the spell resolves.
Guide written with AI from the official text and rulings. Official English text prevails.
How it works : Hour of Revelation
Original English text — Wizards of the Coast / Scryfall
- #1· Wizards of the Coast
There are many important moments in the story, but the most crucial—called “story spotlights”—are shown on cards. These cards have the Planeswalker symbol in their text box; this symbol has no effect on gameplay. You can read more about these events in the official Magic fiction at http://www.mtgstory.com.
No other card is named in this ruling.
- #2· Wizards of the Coast
You determine the cost to cast Hour of Revelation before you pay any of that cost. For example, if the only nonland permanents on the battlefield are Tezzeret the Schemer and nine Etherium Cells he’s given you, Hour of Revelation costs
to cast. You may sacrifice three Etherium Cells to pay this cost, even though there are no longer ten or more nonland permanents after you produce
.
No other card is named in this ruling.
Legal formats
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Meta decks with Hour of Revelation
No archived Top 8 deck with this card yet.



Austere Command
Farewell