For demo locks, Voracity (+8 STA) is a much better choice than Constitution (+100 HP). 5/5 Demonic Embrace will raise your STA gained by 15% -- 9.2 STA. That will be equal to 90 or 100 HP, depending on the rounding with the rest of your gear. In addition to the 90/100 HP: + Your pet's STA will be based off of a percentage of your STA, not your HP. + The percentage of +9.2 STA going toward your pet will be increased by another 15% with 3/3 Fel Stamina -- a percentage of +10.58 STA. + And then a percentage of this increase in STA will be added by 3/3 Demonic Knowledge as an increase to spell