The Cleric Rank is loved by most of the other ranks, and all races will welcome the Cleric with open arms. The issue with this is that not all Clerics are good Clerics.
Clerics use both magic and mental abilities, but they pay for them in Faith Points rather than Manna or Energy. The Faith Points will rise and fall as per the Cleric’s beliefs and as such most powerful clerics become or already are radical or fanatical.