Kol nodded a bit at that. He could understand it, mostly. Maybe not the exact extent of it all, but mostly. Between his compulsion, Elijah's oh-so-specific way of wording things when he made his deals and his promises. Man of word, his brother, but you had to pay attention to the words or else there may be a loophole. "Can he do it to anyone? Does he have to know them?" The way those lovely little "gifts" were being handed out every few weeks, tailored just so to do his best to affect the person it was all intended for, Kol's best guess was no, he didn't have to know them. It was an unsettling thought. He didn't want someone else in his head. The possession had been more than enough.
"Maybe not," he muttered. There was little that struck fear into the non-beating heart of Kol Mikaelson, but the way Crowley talked about Hell, it actually did make him fear it. A faint twitch of a smirk crossed at the comment about his reaction to massacres, but it faded nearly as quickly as it had appeared as a thought occurred to him. Something he'd expressedly not heard from Ruby. Something the former Lucifer loyalist had certainly not given him the steps to perform. If there was going to be a way to make sure neither of them were found for Lucifer's games... He made a mental note to look at that ritual again. Maybe talk to Ruby about it again, pros and cons, consequences he might end up facing if he couldn't get the Angel to see the need in protecting the King of Crossroads.
"For science," he repeated, chuckling softly. There was a drawn out bit of silence between them and a particular thought that kept nagging at him managed to slip out, "What was it?" he asked suddenly. "What happened? In your dream." Because if it wasn't a dream, maybe they needed to know. Maybe it was a clue or a warning or a precursor or... Mind of a Mikaelson. Always scheming, always trying to stay ten moves ahead.