I tested the 226 version of this on the ptr. At 100% - 80% health this weapon granted 20 seconds of speed and 10 seconds of the absorb buff. Dropping to anywhere around 35-80% health it granted leech for 20 seconds and the HoT for 5 seconds. When you dropped to the 35% or lower threshold it granted only avoidance for 20 seconds.At 226 the Tertiary stats all granted 88 to their given stat for 20 seconds. The Absorb was 1708. The HoT was about 296 health per .8 seconds for 5.Edit: I should also note these rules applied to every classes heal as there were no variations between classes.