Oh, Blizzard, you tease.
Recently the Death Knight changes have left me scratching my head. Death Strike's gone to an erratic, but useful self-healing ability to a major damage-dealer for Blood with hardly any healing, back to a solid damage dealer with good self-healing.
At the point when it hardly healed at all, I despaired of ever being able to duo old raids with Kate any more; wistful memories of Zul'Gurub, Molten Core and Onyxia's Lair flashed through my mind and a tear slowly traced its way down my cheek.
However, Death Strike now heals me for about 15% of my health each time I use it, provided I have at least 2 diseases on the target, which is a good enough portion of my health to definitely be worthwhile. So Death Knights, rejoice! Once again, we can sustain our own health in most situations without the assistance of a healer!