Brainstormed Laws:

• Casting a spell that targets a creature you control is against the law.
• Casting spells during combat is against the law.
• Casting two or more spells a turn is against the law.
• Casting no spells is against the law.
• Blocking creatures you control is against the law.
• Transforming a permanent is against the law.
• Activated an ability of an artifact or creature is against the law.

...so wait. Who is your in this case? Active player's turn or the owner or this creature? How does casting spells encourage stalling?

Perhaps meant to 'discourage' stalling? Or maybe it's not meant to have the 'not' at the start.

it punishes an opponent not casting spells or only casting counterspells etc. If you stall out the game they are likely to eventually have a turn where they only hit lands and eventually you mill them out.

The way it is worded it also sounds like it also punishes tap out decks, which I also don't think is the intent.

These should really be reworded as "players" to remove what a truly severe hurdle in a mechanic that's already very complex: "Players casting fewer than 1 spell during their turn is against the law."

I agree this wording looks like you're requiring people to cast spells during your turn (the controller of Mindwiper Agent).

"Not casting a spell during one's own turn is against the law"?

Or Circeus's wording.

Duel deck feedback: this and Archivist of Rulings where the most popular and effective of the justice cards.

Huh. Not what I'd have expected from a Maritime Guard with the only mill effect in the set. Still, cool.

I kinda disagree, this card is simply a common win condition in stalled games. This has been one of the best common justice cards during playtesting

Why did this get moved?

None of the blue archetypes support Justice, it shouldn't show up at common. Additionally, you should check my new Justice variant on the main comments page; I'd like to hear your opinion.

Just because it's not an archetype doesn't mean it's not something that shouldn't exist at common... not every card in a color at common has to be absolutely vital to an archetype. I'm okay with a rogue or Justice deck at common, even a deck. In fact, I think it'd be good for variety in the format.

Look to Shadows for example - Madness is , but is the archetype. Blue still gets madness at common, though.

Fair enough; apologies

At the beginning of your upkeep, each opponent who broke any laws since the beginning of your last upkeep puts the top three cards of their library into his or her graveyard.