This is my opinion about the earth element for Paladin and Priest!
As you can see there are really many bosses in the game so teamplay cannot be avoided. In a party there is (normally) a tank who gets the attention of the mobs that the others can hit it. So it would be the best to have a tank in the team which is normally a paladin because of his higher defense.
But here the priests have their pets to tank when they reach lvl 30. And u can become lvl 30 really fast even alone.
I'm playing an earth paladin (now lvl 41). It is nearly impossible for me to get the attention of the creatures.
So a paladin with lots of defense (an earth paladin) is worthless.
Some skills of an earth pala are useless too.
He can protect himself for several seconds so that he gets no damage and after it he has some damage deflection, thats ok! But for PvP its useless because assassins can lay their traps in front of me and when my skill ends i got trapped! Its really stupid!
Then the skill "Buddhas Palm". It gives with lvl 2 (lvl 30) 15 defense. When I'm lvl 30 i have more than 300 defense so 15 defense is nothing --> useless except of the fact that it cures abnormal status (can also be healed by priests with small healing)
With lvl 40 i got a really stupid skill for a tank!!!
A tank gets a skill which gives 30% movement speed??? What is that for? That i can run away??? And it costs 1/4 of my mp (440 mp)!!
The best thing it lasts whole 6 seconds...
Another character where the earth element is useless is priest.
Why do you need an aura with + defense when the pet has the whole attention of the enemies?
And i think the aura is something really important for a priest. Comparing to metall which gives + damage the earth priest is useless (sry for all who started one)
In World of Qin 2 (predecessor of PDO, on the german server) Earth as an element was more needed than in PDO because the pets were weaker and couldnt held the complete attention. And there were no pills for mp and lp like in PDO.
And an earth paladin was able to defeat higher lvl creatures on his own. In PDO you need pills but then you can also play a metall paladin and use them. So you dont need a earth paladin.
My conclusion to this: Don't play an earth paladin or an earth priest because this is a game for teamplaying and in a team both of them are useless!
PS: I had to write this comment on earth element because I loved playing an earth paladin but i got disappointed. It does not make sense to play one. *Changing to another class or another element...dont know yet^^*
Husarow

*hope to get some feedback - maybe from engputer who has an earth paladin*