Rogue subclass
Mastermind
Social infiltration and long-range tactical Help 
D&D Portal - Help Action rule Help is an action economy rule used to
describe what a creature can do on its turn. Full link: https://dnd-portal.com/rules/actions/help/ actions.
Mastermind starts by changing the normal Rogue play pattern through Master of Intrigue; Master of Tactics, giving the subclass its first clear mechanical identity.
Later features such as Insightful Manipulator, Misdirection, Soul of Deceit expand that identity at higher levels, so the subclass has a clearer role in combat, exploration, utility, or support.
Master of Intrigue; Master of Tactics
3rd level
Gain languages, tool proficiencies, mimicry, and the ability to Help D&D Portal - Help Action rule Help is an action economy rule used to
describe what a creature can do on its turn. Full link: https://dnd-portal.com/rules/actions/help/ as a bonus action 
D&D Portal - Bonus Action Action rule Bonus Action is an action economy rule used to
describe what a creature can do on its turn. Full link: https://dnd-portal.com/rules/actions/bonus-action/ from range.
Insightful Manipulator
9th level
After observing a creature, learn how selected mental and social statistics compare with your own.
Misdirection
13th level
Redirect an attack aimed at you to another creature providing cover.
Soul of Deceit
17th level
Shield 
D&D Portal - Shields Equipment reference Shields is an equipment reference used by
character options and rules. Full link: https://dnd-portal.com/rules/equipment/shields/ thoughts from telepathy and make truth-forcing magic read your statements as truthful.
FAQ
What is the Mastermind Roguish Archetype?
The Mastermind is a social and tactical support Rogue that excels at disguise, languages, reading opponents and using the Help action from range. At Rogue 3, Mastermind adds tactical Help, languages, disguise, and social tools to a character that still advances normally in Sneak Attack, Cunning Action, and the Rogue's defensive features.
Read more: Mastermind 
D&D Portal - What is the Mastermind Roguish Archetype? Mastermind FAQ The Mastermind is a social and tactical support Rogue that excels at disguise, languages, reading opponents and using the Help action from range. At Rogue 3, Mastermind adds tactical Help, languages, disguise, and social tools to a character that still advances normally in Sneak Attack, Cunning Action, and the Rogue's defensive features. Full link: https://dnd-portal.com/faq/mastermind/what-is-the-mastermind-roguish-archetype/
What are the main Mastermind features?
Mastermind is a tactical and social Rogue focused on coordination, disguise, languages, and manipulating other people. Master of Tactics turns Help into a powerful bonus-action support tool, while later features improve social reading, misdirection, and resistance to magical attempts to read or verify the Rogue's thoughts.
Read more: Mastermind D&D Portal - What are the main Mastermind features? Mastermind FAQ Mastermind is a tactical and social Rogue focused on coordination, disguise, languages, and manipulating other people. Master of Tactics turns Help into a powerful bonus-action support tool, while later features improve social reading, misdirection, and resistance to magical attempts to read or verify the Rogue's thoughts. Full link: https://dnd-portal.com/faq/mastermind/what-are-the-main-mastermind-features/
How do you build and play a Mastermind Rogue?
Build the Mastermind on top of a normal Dexterity-focused Rogue, then invest in the secondary abilities and skills that support the archetype. Think about allies' turns as part of your own. Master of Tactics can create advantage for a heavy-hitting ally without giving up your action. Outside combat, use languages, disguises, forgery and Expertise to become an organiser, infiltrator or intelligence specialist.
Read more: Mastermind D&D Portal - How do you build and play a Mastermind Rogue? Mastermind FAQ Build the Mastermind on top of a normal Dexterity-focused Rogue, then invest in the secondary abilities and skills that support the archetype. Think about allies' turns as part of your own. Master of Tactics can create advantage for a heavy-hitting ally without giving up your action. Outside combat, use languages, disguises, forgery and Expertise to become an organiser, infiltrator or intelligence specialist. Full link: https://dnd-portal.com/faq/mastermind/how-do-you-build-and-play-a-mastermind-rogue/
How does Mastermind interact with Sneak Attack?
Mastermind does not create a special personal Sneak Attack trigger. Its combat strength is often indirect: the bonus-action Help improves an ally's attack while the Rogue still uses the action for a normal Sneak Attack weapon attack. This makes it a strong cooperative archetype.
Read more: Mastermind D&D Portal - How does Mastermind interact with Sneak Attack? Mastermind FAQ Mastermind does not create a special personal Sneak Attack trigger. Its combat strength is often indirect: the bonus-action Help improves an ally's attack while the Rogue still uses the action for a normal Sneak Attack weapon attack. This makes it a strong cooperative archetype. Full link: https://dnd-portal.com/faq/mastermind/how-does-mastermind-interact-with-sneak-attack/
How does Master of Tactics work?
Master of Tactics lets a Mastermind use the Help action as a bonus action. When using Help to aid an ally's attack, the target of that attack can be within 30 feet of you rather than requiring the normal close positioning, provided the feature's visibility and hearing requirements are satisfied.
Read more: Mastermind D&D Portal - How does Master of Tactics work? Mastermind FAQ Master of Tactics lets a Mastermind use the Help action as a bonus action. When using Help to aid an ally's attack, the target of that attack can be within 30 feet of you rather than requiring the normal close positioning, provided the feature's visibility and hearing requirements are satisfied. Full link: https://dnd-portal.com/faq/mastermind/how-does-master-of-tactics-work/