Stats taken from Retail (Level 80 Death Knight)
Raise Dead
Cooldown: 3 minutes
Regent: Corpse Dust (http://www.wowhead.com/?item=37201)
Controls: None (Means that the ghoul will use all the spells without players control)
http://www.wowhead.com/?spell=46584
Glyph of Raise Dead
Regent: Raise Dead no longer requires Corpse Dust
http://www.wowhead.com/?item=43673
Night of the Dead (Talent) 1/2
http://www.wowhead.com/?spell=55620
Reduces the cooldown on Raise Dead by 45 sec. and the cooldown on Army of the Dead by 5 min. Also reduces the damage your pet takes from area of effect attacks by 40%.
Night of the Dead (Talent) 2/2
Reduces the cooldown of Raise dead by 90sec.
http://www.wowhead.com/?spell=55623
Reduces the cooldown on Raise Dead by 90 sec. and the cooldown on Army of the Dead by 10 min. Also reduces the dadamage your pet takes from area of effect attacks by 70%.
Master of Ghouls (Talent) 1/1
http://www.wowhead.com/?spell=52143
Reduces the cooldown on Raise Dead by 60 sec., and the Ghoul summoned by your Raise Dead spell is considered a pet under your control. Unlike normal Death Knight Ghouls, your pet does not have a limited duration.
This talent gives you control over your minion.
-- Minion Spells at level 80 --
Claw
40 energy
Cooldown: None
http://www.wowhead.com/?spell=47468
Gnaw
30 energy
Cooldown 30 sec
http://www.wowhead.com/?spell=47481
Leap
10 Energy
Cooldown: 20 sec
http://www.wowhead.com/?spell=47482
Huddle:
Canneled for 10 seconds
Cooldown: 45 second
http://www.wowhead.com/?spell=47484