For a new player, it is really exciting at first as you get to try a lot of different variations and get a glimpse of the depth of the game usually also playing against people at the same level in matchmaking
Be it a reanimator deck that needs self-mill, a storm deck, or a Splinter Twin + Pestermite combo deck, blue is usually involved somehow
Magic 2013 made some new flavorful lords with cards like My pick for 2012 is Avacyn Restored had an Angel typal theme and was trying to add a handful of new monster typal cards, so the Design team decided to make a neutral typal-friendly card, similar to what we had done with Just My Typal That's as far as we'll get through today
With how small windows of opportunity are in cEDH, one turn is often all it takes to get there and win especially when the extra turn you take can be between two opponents turns oh yeah, its an instant
The gameplan is simple
Most extra-turn spells cost five mana or more, which explains why its such a massive outlier in power