The star of this Paladin deck is the new legendary card: Nozdormu The Timeless. This 8/8 dragon costs only four mana. It can give both players 10 mana crystals when played.
This means you can immediately start playing your big dragons and take full control of the board. However, there is only one copy of Nozdormu in your deck.
That's why it's also important to use Frizz Kindleroost. This card reduces the cost of all your big dragons, including Nozdormu. You can then play it as an 8/8 body for only 2 mana.
This deck can also draw cards and protect your minions. It also has a few other staples that are auto-included into almost every Paladin deck these days.