While Blood is not quite as as powerful as it once was, it remains, at the least, a solid DPS tree and one quite a few Death Knights will probably choose to level with. The wide array of self healing abilities means that a Blood Death Knight has a very hard time dying, and nothing interrupts a good grinding session quite like a death.
In Skill Mastery today, we'll look at one of the Blood Death Knight's signature talent abilities, the 21-point talent Mark of Blood. Mark of Blood is placed on an enemy, and every time that enemy deals damage, their target is healed for 4% of their max health. It costs 1 Blood Rune. It lasts for 30 seconds, and has a cool down of 3 minutes.
It's a straightforward skill to use. Throw it on your target and keep fighting. Using it effectively, however, may take a little bit of thought. Here's some tips to figuring out the best way and time to make your mark: