Blood Pact

Blood Pact is an aura, cast by the Warlock's Imp pet, which increases the Stamina of your party.

Blood Pact is available at level 4 as an Warlock Imp ability.

Tips and tactics
Tanks usually appreciate having extra health, making the Imp a welcome addition to the tank's party. As the buff does not stack, an Imp would not be as useful in the presence of another allied Imp.

The effectiveness of Blood Pact increases as the number of units in the Imp's party increases as well, since they all receive the same buff. In the best case scenario (prior to patch 3.0.2), ten units (five pet users and their pets) would receive the buff. Now, the buff extends to entire raids, allowing as many as eighty potential buffs.

Known bugs
A bug in the game currently prevents the tooltip from reflecting the correct Stamina bonus when Improved Imp is in effect. The correct bonus is being applied; only the tooltip is affected by this bug.

After patch 3.0.2, a new bug causes Blood Pact to grant far less extra health than is displayed in the tooltip. It is unknown whether the spell's effect will be changed to reflect the tooltip, or the tooltip changed to reflect the spell's effect.