Scryfall - Casual Challenge Checker

Name: Scryfall - Casual Challenge Checker
Author: XieLong

Checks deck lists on scryfall.com if they are legal for the 'Casual Challenge', a custom Magic the Gathering format created by XieLong and Janosch.exe.

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Install

Features & Capabilities

Enhances Scryfall.com with card legality and budget information for the MtG custom format "Casual Challenge".

Supported views:

Deck view, both visual and as decklist
Search results, images only
Single card view

How to use: For decks: Find the "Enable checks" button in the left sidebar and click it. Your deck will now always be checked, until you click "Disable checks". For search results: Find the dropdown reading "Disable" and switch it to "Overlay". The status of the dropdown is stored as well. For single cards: Legality is just shown along with the other card legalities.

Check out the format page for detailed information: https://www.casualchallenge.gg/

User Growth & Download Statistics

Add-on

By:

XieLong

Daily users:

15 1

Version:

1.0.0 Last updated: 2025-09-11

Version code:

6032529

Creation date:

2023-05-07

Risk:

Permissions:

Host permissions:

https://*.scryfall.com/*

Content scripts matches:

scryfall.com

Size:

85.80KB

URLs:

Website

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-07-11

Compare stats and ranking:

Ranking

# 27,082 ▲ 846

For Developers

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Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.

Developed by:

XieLong

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/scryfall-casual-challenge/

Website:

https://www.casualchallenge.gg/

Permission Change History

2023-08-08: Version 0.10.0 → 0.11.0

Add Host permissions: https://*.scryfall.com/*

Remove Host permissions: https://*.scryfall.com/

Add Permissions: scripting

Is Scryfall - Casual Challenge Checker Safe?

Risk impact

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

Scryfall - Casual Challenge Checker requires very minimum permissions.

Risk impact analysis details

High Injects scripts into web pages, which may alter or extract site contents, resulting in a substantial risk.
Low ******* ****** ** *** ********* ******** ************

Risk likelihood

Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

Scryfall - Casual Challenge Checker is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

Risk likelihood analysis details

High This extension has low user count. Unpopular extensions may not be stable or safe.
Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****