You gain the class features and proficiencies of a 10th level rogue, but not its ability score improvements. You only get this classes hit die if your current classes hit die is lower than a d8.
You gain proficiencies in the following:
Armor: Light armor
Weapons: Simple weapons, hand crossbows, longswords, rapiers, shortswords
Tools: Thieves’ tools
Saving Throws: Dexterity, Intelligence
Skills: Choose four from Acrobatics, Athletics, Deception, Insight, Intimidation, Investigation, Perception, Performance, Persuasion, Sleight of Hand, and Stealth
You can also choose two of your skill proficiencies, or one of your skill proficiencies and your proficiency with thieves’ tools. Your proficiency bonus is doubled for any ability check you make that uses either of the chosen proficiencies.
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