does the keystone mastery Warlord's Bloodlust stack with the passive from Death's Dance?

I recently played a game as Vayne and did relatively well i built the new Deaht's Dance item on her and it seemed to be doing failry well on her so that raised my question of does that items passive concerning healing based on damage taken stack with the keystone mastery Warlord's Bloodlust to heal for an insane amount??