When Will You Learn? 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 exiles the top card of their library. You may cast any number of spells from among cards exiled this way without paying their mana costs.
Complete guide
When Will You Learn? is a powerful scheme used in Archenemy games to punish your opponents' preparations. By setting this scheme in motion, you strip resources directly from your enemies' libraries and use their own spells against them. It offers a unique opportunity to cast multiple spells for free, potentially turning the tide of the battle in an instant.
Mastering the Library
When this scheme is set in motion, every opponent exiles the top card of their library. Unlike many other theft effects, this scheme allows you to cast any number of those cards immediately without paying their mana costs. You are not limited by timing restrictions for card types like sorceries or creatures, though you must follow any specific casting restrictions printed on the cards themselves.
The Momentum of Resolution
The resolution happens in a specific sequence: first, everyone exiles their top card. Second, you choose which of those cards you wish to cast and put them on the stack in any order you choose. It is important to note that you must cast them right now, while the ability is resolving. You cannot save these cards for later in the turn; any card you choose not to cast will remain in exile permanently.
Costs and Variables
Since you are casting these spells 'without paying their mana costs,' you cannot use other alternative costs like Emerge or Overload. If a spell has an X in its mana cost, you must choose 0 as the value for X. However, you are still responsible for mandatory additional costs. If an opponent exiles a card that requires discarding a card or sacrificing a permanent to cast, you must fulfill those requirements to put it on the stack.
Strategic Implementation
This scheme is best played when your opponents have powerful, high-mana spells likely to be at the top of their decks. Because the spells go on the stack during the scheme's resolution, they will resolve one by one after the scheme finishes. This can create complex stack interactions that benefit the Archenemy before the opponents can react with their own mana.
Interaction examples
Sol RingIf an opponent exiles Sol Ring with this scheme, you can cast it immediately for free. Since Sol Ring is an artifact, it would normally require one generic mana, but When Will You Learn? allows you to bypass this cost, placing it onto the battlefield to expand your mana pool for future turns.
Command TowerIf an opponent exiles Command Tower, you cannot play it. The scheme specifically says you may 'cast spells' from among the exiled cards. Since lands are not spells and are never cast, Command Tower will simply remain in exile for the rest of the game, effectively removing a resource from your opponent.
Guide written with AI from the official text and rulings. Official English text prevails.
How it works : When Will You Learn?
Original English text — Wizards of the Coast / Scryfall
- #1· Wizards of the Coast
If you cast a card "without paying its mana cost," you can't choose to cast it for any alternative costs, such as emerge costs. You can, however, pay additional costs. If the card has any mandatory additional costs, such as that of Tormenting Voice, you must pay those to cast the card.
No other card is named in this ruling.
- #2· Wizards of the Coast
If the card has
in its mana cost, you must choose 0 as the value of X when casting it without paying its mana cost.No other card is named in this ruling.
- #3· Wizards of the Coast
You must cast any of the exiled cards you wish to cast for free while this scheme's ability is resolving. You can't wait until later in the turn. Any cards not cast this way remain exiled for the rest of the game. The spells will be added to the stack in the order that you cast them.
No other card is named in this ruling.
- #4· Wizards of the Coast
If the owner of one of the exiled cards leaves the game, that card leaves the game as well.
No other card is named in this ruling.
- #5· Wizards of the Coast
Now you have learned.
No other card is named in this ruling.
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Meta decks with When Will You Learn?
No archived Top 8 deck with this card yet.