There are several law journals and publications that can provide valuable guidance on legal drafting and advocacy skills for the UPSC Law Optional subject. These resources can help candidates enhance their knowledge and understanding of various legal concepts and improve their ability to effectively communicate their arguments in a concise and persuasive manner. Here are some notable publications that can be beneficial:

1. Legal Desire: Legal Desire is an online platform that offers a wide range of resources for law aspirants. It provides access to articles, case summaries, legal news, and legal research papers that can aid in developing legal drafting and advocacy skills.

2. Indian Journal of Law and Technology (IJLT): IJLT is a well-known journal that focuses on the intersection of law and technology. It publishes articles and research papers that can help candidates gain insights into contemporary legal issues and improve their legal writing skills.

3. Indian Journal of International Economic Law (IJIEL): IJIEL is a reputed journal that focuses on international economic law. It covers a wide range of topics such as trade law, investment law, and intellectual property law. Reading articles and case analyses published in this journal can help candidates develop a deeper understanding of international legal frameworks and enhance their legal drafting skills.

4. All India Reporter (AIR): AIR is a leading legal journal that provides access to case law from various courts in India. It is a valuable resource for candidates preparing for the UPSC Law Optional subject as it offers detailed summaries and analysis of important judgments. Studying these case summaries can help candidates understand legal principles and improve their ability to draft persuasive arguments.

5. Bar & Bench: Bar & Bench is a popular online legal news portal that covers a wide range of legal topics. It provides updates on the latest legal developments, interviews with legal experts, and analysis of important judgments. This resource can help candidates stay updated with recent legal developments and improve their knowledge of legal drafting and advocacy.

In conclusion, law journals and publications such as Legal Desire, IJLT, IJIEL, AIR, and Bar & Bench can provide valuable guidance on legal drafting and advocacy skills for the UPSC Law Optional subject. These resources offer a wealth of information on various legal topics, case law, and legal analysis, helping candidates enhance their understanding and proficiency in legal writing and oral advocacy.