Archer skill rune - 5:05
Knight skill rune - 10:08
Banefire dragon - 12:32
The wizard skill rune here is definitely the highlight. It's re-vamped the skill for PvE and made it incredibly deadly for PvP. Make sure you don't walk into it when fighting someone!
The knight and archer ones are both interesting and nicely balanced. For knights it is a decent boost to a defensive skill which means you can pick it without losing too much damage output. For archers it is a strong water skill which can be used to slightly increase DPS on a boss, kill off some enemies quickly or kill a person in PvP faster. If you have a high fire stat then it won't be any use for you but it it is a great water skill anyway.
Banefire is a very costly dragon which has limited uses. It looks amazing for PvP because of the 50% damage reduction for yourself and the way it teleports to your location when you get attacked, stunning surrounding enemies. But in order to be good enough to survive you will need it relic/mythic and to get there it will take LOTS of exp. In PvE it is more of a support dragon than a tank dragon. It's great for knights because it gives an almost constant 50% damage reduction but for archers and wizards it will not tank much better than other dragons.