So often with a villain like Loki we just have to take it on faith that he's "silver-tongued" or the "Prince of Lies" without it ever actually having an impact on the characters around him. Here's an example of how to actually use him. Jamie McKelvie's beautiful clean line-work is the reason I picked up a book with the ridiculous title Young Avengers but I'm sticking around because of the writing courtesy of Kieron Gillen.
Young Avengers #4
Jamie McKelvie with Mike Norton and Matthew Wilson