You are skilled at bringing out the best in other people. When looking to elevate their game, the best look for you to bring them to the top of what they can do.

Inspiring words

At third level when you choose this subclass, you have learned to lace your kind words with magic. When you chose this subclass at 3rd level of Rogue, you learn the cantrips Guidance and Resistance. For you the range of these spells is 30 feet. Furthermore, your dedication to speaking bolstering words, allows you to maintain concentration on these spells for a number of targets equal to your proficiency bonus.

Researcher

At third level when you pick this subclass, you acquire this feature. In order to understand and assist, you must learn about the areas of interest of those you are assisting. You learn two of the following skills: Arcana, History, Medicine, Nature, Religion.

Researcher (part 2)

At third level when you pick this subclass, you acquire this feature. The best assistants know how to find the right things. You also learn the Investigation skill, your proficiency bonus is doubled for any ability check you make that uses the Investigation skill.

Flash of respect

Starting at 9th level, you gain the ability to come up with solutions under pressure. When you or another creature you can see within 30 feet of you makes an ability check or a saving throw, you can use your reaction to add your proficiency bonus to the roll. You can do this a number of times a day equal to your proficiency bonus, and regain all uses after a long rest. If the roll fails anyway, you can cast guidance or resistance on the target as part of your reaction.

Assisted mastery

Starting at 13th  lv, if you are part of a group making a group roll, and at least you and one other person are proficient in the skill in question, treat all rolls of 1-9 as 10.

Assisted strike

Whenever you hit a creature in combat, the next attack against that creature is made with advantage. You gain this feature when you reach 17th level in this class.