Arcane Lighthouse 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
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Complete guide
Arcane Lighthouse is a strategic utility land designed to strip away the protection of your opponents' most elusive threats. By illuminating the battlefield, it ensures that no creature can hide behind magical wards, making it an essential tool for decks that rely on targeted removal. This land provides both colorless mana and a powerful activated ability to bypass hexproof and shroud defenses.
Illuminating the Hidden
Arcane Lighthouse has two activated abilities. The first is a standard mana ability that taps for one colorless mana. The second ability costs one mana and tapping the land; upon resolution, it causes all creatures currently controlled by your opponents to lose hexproof and shroud. Furthermore, those specific creatures cannot gain these keywords until the end of the current turn.
Step-by-Step Resolution
When you activate the second ability, it goes on the stack. Once it resolves, it checks which creatures your opponents control at that exact moment. Those creatures immediately lose hexproof and shroud. Even if an opponent attempts to cast a spell later in the turn to grant them hexproof, the 'can't have' clause of Arcane Lighthouse takes precedence, preventing the keyword from being applied while the other effects of the spell still resolve.
The Timing of the Light
A common mistake is thinking the Lighthouse affects creatures that enter the battlefield later in the turn. The ability only creates a continuous effect for creatures on the board at the time of resolution. If an opponent plays a new creature with hexproof after your Lighthouse ability has finished resolving, that new creature will still have its protection. Always wait until your opponent has committed their threats to the board before activating the beam.
Continuous Effects and Static Abilities
If an opponent has a static effect, such as an Aura or an Equipment that grants hexproof, Arcane Lighthouse temporarily suppresses that keyword. The protection is 'turned off' for the remainder of the turn. Once the turn ends, the static ability of the Aura or Equipment will resume granting hexproof as normal, provided the Lighthouse ability has expired.
Interaction examples
Command Tower
Exotic OrchardIn a multiplayer game, you can tap Command Tower or Exotic Orchard to produce the mana required for the Arcane Lighthouse activation. This allows you to keep your colored mana sources available for the targeted removal spell you intend to cast once the opponent's creatures are exposed.
If an opponent controls a creature with shroud that you need to destroy, you first activate Arcane Lighthouse by paying one mana and tapping it. After the ability resolves, the creature loses shroud. You are then free to target that creature with a destruction spell or an exile effect during the same turn.
Suppose an opponent has a creature enchanted with an Aura that grants hexproof. You activate Arcane Lighthouse. Even though the Aura stays attached and its static ability remains active, the Lighthouse's 'can't have hexproof' effect prevents the keyword from functioning. This allows you to target the creature for the rest of the turn.
Guide written with AI from the official text and rulings. Official English text prevails.
How it works : Arcane Lighthouse
Original English text — Wizards of the Coast / Scryfall
- #1· Wizards of the Coast
After the second ability resolves, continuous effects generated by the resolution of spells and abilities that would give hexproof or shroud to one of the affected creatures aren't created. For example, after the second ability resolves, a spell cast by an opponent that gives creatures they control hexproof wouldn't cause the creatures to have hexproof. (If that spell has additional effects, such as raising the power of the creatures, those effects will apply as normal.)
No other card is named in this ruling.
- #2· Wizards of the Coast
Continuous effects generated by static abilities (such as an Aura that grants hexproof to a creature) will not apply during the turn, but will resume applying once the turn ends.
No other card is named in this ruling.
- #3· Wizards of the Coast
The second ability applies only to creatures controlled by your opponents when it resolves. Creatures that enter the battlefield or come under an opponent's control later in the turn won't be affected.
No other card is named in this ruling.
Legal formats
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Meta decks with Arcane Lighthouse
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