The spellwork it would take to open a portal at will only required six deaths. These creatures consume impurities in Time. [ said in the sort of tone that suggests that clarifies everything, but he knows even before he looks at dean that it didn't clarify jack crap for him. ]

The potential energy could be applied to fueling almost any known magic. But Dean, they're too volatile to risk an attempt to capture. [ remember? we only escaped with one paradoxed-out-of-existence and me ditching the jimmysuit. ]