There's a few things, first they do retartedly high amounts of damage. Infact, the Unholy spec I'm using has AoE tanking potential similar to a Pali, but with heavy spell casting defense and offense. Ebon Plaguebringer increases the damage of spells cast on targets. Anti Magic shell reduces spell damage taken by the group or raid by 75%! And considering the encounters in Wrath, that is HUGE. There are a lot of AoE fights, and general spellcasting baddies. Throw in the pet that leaps on your targets back when you Death Grip it and all of ther other little perks and you have a deeply fun and unique class to play around with. Part of the reason for my switching focus from the old team is that I've played everything in the game already. This is something new. And I can't deny that attraction is there, but also I played a Shadow Knight in EQ for quite a while and loved it. I loved the Dk in the old WC games, so overall this class has me written all over it. Anyhow, back to the push to 70, and beyond.