- Death strike - massive spammable self heal
- Blood plague - drains health from all targets to heal DK
- Voracious (talent) - grants leech after death strikes, which means you basically have permanent 15% leech
- Blood worms (talent) - alternative to Voracious, are actual blood leeches
- Swarming Mists (Venthyr) - with the free cov lego in 9.2, this will provide massive aoe life steal to Venthyr BDK
DK has a lot of leech.
Leech is a feature available to many classes easily, including rogue, hunter and DH. Should they not have it?