I used this deck to get to KOGs. Even with bad starting hands I was able to win a lot of the time. The Harpies and Relinquish combo is really good to control your opponent's board. By discarding the current monster you control with harpies hunting ground and then taking another. I haven't faced anyone else running this exact list but I'm sure I'm not the only one.
This deck has so many dead draws. You just got lucky getting KoG. Theres no way you get to use all 3 elegant egotist in a duel and the amount of times you get a Harpie sisters draw seems to be very bad.
3 Elegant Egotist is for consistency. Obviously don't plan to use all 3. Dead draws didn't happen often because there are many ways to win with it. Games with this deck generally end very quickly.
Imo, 2 sonic birds and 2 senju are such overkill, you've got only one relinquished and one ritual! Most of the time they will just be effect monster without effect, 1400 attack :/ way better options imo.