Rahool is pleased to hear of your natural gift for focusing Umbral Engrams.
"Well done, Guardian," he says. "I'm glad the secrets of the engrams speak to you, and I hope you will use their power wisely."
He tells you he will be honored to decipher any engram you bring him, though he does not promise results as potent as those you could find by focusing at the Star Chart.
"I look forward to what puzzles you may bring," he says.