Last Updated: 2025-12-20

This AI Use & Limitations Policy (“Policy”) explains how the AI features provided through mtgmaster.ai (the “Service”) may be used, their limitations, and the responsibilities of both users and the Service operator, Marc Dalmau Ballester, a self-employed professional (“Autónomo”) established in Spain (“we”, “us”, or “our”).

By using any AI-powered functionality on the Service, you agree to comply with this Policy, the Terms of Service, the Privacy Policy, and any applicable laws and regulations.

1. Purpose of AI Features

The Service provides AI-assisted tools designed to enhance the user experience, including but not limited to:

Deckbuilding suggestions
Card synergy analysis
Collection insights and optimization
Probability calculations and heuristics
Natural-language descriptions, summaries, and creative outputs
Recommendation systems
Metadata processing or categorization

These tools are intended for entertainment, experimentation, and educational assistance only. They are not substitutes for professional expertise, rules authority, or financial advice.

2. AI Output Limitations

AI-generated outputs may contain:

Errors or inaccuracies
Misinterpretations of Magic: The Gathering rules
Illegal or invalid deck constructions
Incorrect pricing, probability, or synergy calculations
Outdated card information
Biased interpretations
Non-unique or repetitive content

AI outputs are provided “as is,” without guarantees of correctness, completeness, or reliability.

You must verify all AI outputs yourself, especially before using them in tournaments, competitive play, or financial decisions.

We do not guarantee that AI-generated results will:

Improve gameplay
Be optimal or efficient
Respect local tournament legality
Reflect real-time pricing or card availability
Correspond to actual competitive metagame data

3. No Official Endorsement or Rule Authority

AI outputs are not official rulings and do not come from Wizards of the Coast, judges, or certified rules authorities.

The Service is not affiliated with Wizards of the Coast.
Outputs involving Magic: The Gathering content are fan-generated and subject to Wizards’ Fan Content Policy.

4. User Responsibilities

By using AI features, you agree to:

Use AI outputs responsibly
Verify legality and accuracy of any decklists or suggestions
Not rely solely on AI for tournament decisions
Not use AI-generated content to mislead, harass, or manipulate others
Not attempt to bypass system restrictions or produce harmful outputs

Users remain fully responsible for:

Their deckbuilding choices
How they use AI information
Any decisions made based on AI suggestions
Compliance with MTG rules, tournament policies, and local laws

5. Prohibited Uses of AI

You may not use the AI tools for:

5.1 Illegal Activity

Fraud
Hacking
Circumventing game systems
Automated cheating

5.2 Harmful or Abusive Content

Harassment, threats, or toxic behavior
Hate speech or discrimination
Generating harmful strategies targeting individuals or groups

5.3 Intellectual Property Abuse

Attempting to reproduce copyrighted text beyond what is permitted under fair use or the Fan Content Policy
Automated scraping or mass extraction of outputs

5.4 System Abuse

Spamming prompts
Trying to overload servers
Attempting prompt injection or jailbreak techniques
Reverse-engineering the AI or its safeguards

Violation of this section may lead to account suspension or termination.

6. Ownership of AI-Generated Content

Unless otherwise restricted by law or third-party IP rights:

You may generally use AI-generated outputs for personal and non-commercial purposes
MTG-related content remains subject to Wizards of the Coast’s intellectual property rules
You acknowledge that AI-generated content may not be unique and may be produced for other users

You do not receive exclusive rights to AI-generated content.

We do not guarantee that outputs are free from IP restrictions or that reuse outside the Service is legally permissible.

7. Data Input and Model Training

7.1 Your Data Is Not Used to Train External Models

AI prompts, decklists, collections, and usage data submitted to the Service are not used to train OpenAI, Anthropic, Google Gemini, or any external AI models, unless specifically stated otherwise.

7.2 How Your Data May Be Used Internally

We may use anonymized or aggregated data to:

Improve the Service
Analyze usage patterns
Optimize features
Detect abuse or fraud

All internal processing is performed in accordance with our Privacy Policy, GDPR, and LOPDGDD.

7.3 Sensitive Data

You agree not to input:

Personal data of third parties
Confidential or sensitive information
Anything that would violate privacy laws

8. Accuracy and Liability Disclaimer

The AI tools are assistive, not authoritative.
We make no guarantees regarding:

Accuracy
Reliability
Completeness
Suitability for your particular use case

We are not liable for:

Incorrect decklists or legality issues
Financial losses based on card price estimations
Gameplay losses or competitive disadvantages
Decisions based on AI suggestions
Errors in probabilities or analytics
Misuse of AI-generated output
Any damages resulting from reliance on AI tools

Your sole remedy for dissatisfaction is to discontinue use of the AI features.

9. AI Safety and Ethical Use

We incorporate safety mechanisms to prevent:

Harmful outputs
Abusive content
Illegal or unsafe suggestions

Users attempting to bypass these protections (e.g., via prompt injection) may be subject to:

Account restrictions
Credit freezes
Permanent bans

10. Changes to This Policy

We may update this AI Use & Limitations Policy to reflect:

New AI features
Regulatory changes
Safety improvements

Any updates will be published on this page with a new “Last Updated” date.

11. Contact

For questions or concerns about this Policy or AI features, contact:

Marc Dalmau Ballester
Email: contact@mtgmaster.ai
Address: **Sant Roc 2, 08340, Vilassar de Mar, Barcelona, SPAIN **

By using AI-powered features on the Service, you acknowledge that you have read, understood, and agree to this AI Use & Limitations Policy.