Know Thy Weakness

Starting at 10th level, you can analyze your enemies to discover their vulnerabilities and exploit them in combat. By spending at least 1 minute concentrating on a single target, you gain a deep understanding of their weaknesses.

• Activation: 1 minute of concentration
• Effect: After concentrating on a target for 1 minute, you learn their weaknesses. For the next hour, all your attacks against that target deal an additional 1d6 damage, and you have advantage on attack rolls against them.
• Limitations:
  • You must be able to continuously see the target for the entire concentration duration.
  • Your target may feel that you are observing them and may disrupt your concentration where you would need to re-start the process 

At 15th Level: You can concentrate on up to 2 targets simultaneously, learning the weaknesses of both. For the next hour, all your attacks against these targets deal an additional 1d6 damage, and you have advantage on attack rolls against them.

At 20th Level: You can concentrate on up to 3 targets simultaneously, learning the weaknesses of all. For the next hour, all your attacks against these targets deal an additional 1d6 damage, and you have advantage on attack rolls against them.