Basic abilities for DK's to have if grinding for either stamina or magicka just change the morphs for either stamina or magckia and swap a staff for a bow. If going tank just decide if you want to use stamina or magicka abilties and then go for damage mainly but still level up abilities/weapons you are going to use as a tank. If using destruction staff to grind put sword and shield on secondary bar and once you put down your dots and aoe's on the floor switch to sword and shield and just put down some dk abilities or whatever skill you want level on that bar to get a even spread of xp on abilities.