Grid Monitor 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
You can't cast creature spells.
Complete guide
Grid Monitor is a massive 4/6 artifact creature for only four mana, but it comes with a significant drawback that can stall your game if you aren't prepared. Understanding how to navigate its restrictive ability is key to utilizing its high power-to-toughness ratio without locking yourself out of the game. Here is everything you need to know about this imposing Construct.
What it Does
While Grid Monitor is on the battlefield, you are prohibited from casting any creature spells. This applies to any spell with the 'Creature' type, including Artifact Creatures and Enchantment Creatures. It is a static ability that continuously checks the game state, meaning the moment it enters the battlefield, your ability to cast creature spells ceases until it leaves.
How it Resolves Step by Step
First, you cast Grid Monitor by paying four generic mana; at this point, you can still cast other creature spells in response if they have Flash. Once Grid Monitor resolves and enters the battlefield, its static ability becomes active immediately. From this point forward, if you attempt to cast a creature spell from your hand, graveyard, or library, the game rules will prevent you from even putting that spell onto the stack. If Grid Monitor is destroyed or exiled, the restriction is lifted instantly, and you may resume casting creature spells as normal.
Common Mistakes
A frequent misconception is that Grid Monitor prevents creatures from entering the battlefield entirely. This is false. You can still use abilities or spells that put creatures directly onto the battlefield, such as 'blink' effects or reanimation spells. Additionally, Grid Monitor does not stop you from creating creature tokens. Another mistake is thinking you can 'cast' a creature and then lose Grid Monitor in response; since the restriction prevents you from casting the spell in the first place, you cannot even begin the process while the Monitor is out.
When to Play It
Grid Monitor is best utilized in decks that rely on non-creature win conditions or decks that cheat creatures into play rather than casting them. It is also a popular 'gift' to give to opponents using exchange effects, effectively preventing them from playing their deck's primary threats while you enjoy the freedom to continue your own strategy.
Interaction examples
Solemn SimulacrumIf you control Grid Monitor, you cannot cast Solemn Simulacrum from your hand because it is an Artifact Creature. Even though it provides land ramp, the 'Creature' type on the card means it is prohibited by the Monitor's static ability.
Roaming ThroneIf you attempt to cast Roaming Throne while Grid Monitor is on the battlefield, the casting process will fail because Roaming Throne is a creature spell. However, if you already had Roaming Throne on the battlefield and named 'Construct', Roaming Throne would not be affected by Grid Monitor, as the Monitor's ability is static and does not 'trigger'.
Guide written with AI from the official text and rulings. Official English text prevails.
How it works : Grid Monitor
Original English text — Wizards of the Coast / Scryfall
- #1· Wizards of the Coast
A “creature spell” is any spell with the type Creature, even if it has other types such as Artifact or Enchantment. Older cards of type Summon are also Creature spells.
No other card is named in this ruling.
- #2· Wizards of the Coast
You can still put creature cards onto the battlefield or create creature tokens.
No other card is named in this ruling.
Legal formats
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Meta decks with Grid Monitor
No archived Top 8 deck with this card yet.