~Jimmy is alive as of 4x14, so Castiel isn't possessing a dead body.
According to Castiel in [[4.18 The Monster At The End Of This Book]]: ""Archangels are fierce. They're absolute. They're Heaven's most terrifying weapon."
*An angel is capable of snatching a human soul from The Pit. (According to a Lore book that [[Bobby]] read to both [[Dean]] & [[Sam]])
*Like [[Demon]]'s Angels have proven to be quite capable of possessing a dead body
([[Castiel]] is currently possessing a dead body)
*The True Voice of an Angel can cause the human ear to bleed; unless the person who receives the true voice of an angel is special in some way. It currently remains unclear as to what the actually standards are that must be met for someone to be considered "special".
*According to a statement made by [[Castiel]], Angels are not '''Omniscient'''.