Emma nodded her head a little, pursing her lips as she frowned just a tad, "You're somewhat terrifying when you want to be, you know that."
She figured that his honesty was probably all that stopped him from being absolutely terrifying, but the capabilities were definitely awe-inspiring and bonechilling at the same time. Then again, she had asked.
"Then again, I could've probably pulled that on Regina a time or two." With how the other woman made her feel at times, yes, Emma could understand that quiet kind of rage.