Rank 1: Grants both the Warlock and the summoned demon an effect as long as that demon is active.

Imp - Increases your Fire damage by 1%, and increases the critical effect chance of your Fire spells by 1%.

Voidwalker - Reduces Physical damage taken by 2%.

Succubus - Increases your Shadow damage by 1%, and increases the critical effect chance of your Shadow spells by 1%.

Felhunter - Reduces all spell damage taken by 2%.

Felguard - Increases all damage done by 1%, and reduces all damage taken by 1%.

Rank 2: Grants both the Warlock and the summoned demon an effect as long as that demon is active.

Imp - Increases your Fire damage by 2%, and increases the critical effect chance of your Fire spells by 2%.

Voidwalker - Reduces Physical damage taken by 4%.

Succubus - Increases your Shadow damage by 2%, and increases the critical effect chance of your Shadow spells by 2%.

Felhunter - Reduces all spell damage taken by 4%.

Felguard - Increases all damage done by 2%, and reduces all damage taken by 2%.

Rank 3: Grants both the Warlock and the summoned demon an effect as long as that demon is active.

Imp - Increases your Fire damage by 3%, and increases the critical effect chance of your Fire spells by 3%.

Voidwalker - Reduces Physical damage taken by 6%.

Succubus - Increases your Shadow damage by 3%, and increases the critical effect chance of your Shadow spells by 3%.

Felhunter - Reduces all spell damage taken by 6%.

Felguard - Increases all damage done by 3%, and reduces all damage taken by 3%.

Rank 4: Grants both the Warlock and the summoned demon an effect as long as that demon is active.

Imp - Increases your Fire damage by 4%, and increases the critical effect chance of your Fire spells by 4%.

Voidwalker - Reduces Physical damage taken by 8%.

Succubus - Increases your Shadow damage by 4%, and increases the critical effect chance of your Shadow spells by 4%.

Felhunter - Reduces all spell damage taken by 8%.

Felguard - Increases all damage done by 4%, and reduces all damage taken by 4%.

Rank 5: Grants both the Warlock and the summoned demon an effect as long as that demon is active.

Imp - Increases your Fire damage by 5%, and increases the critical effect chance of your Fire spells by 5%.

Voidwalker - Reduces Physical damage taken by 10%.

Succubus - Increases your Shadow damage by 5%, and increases the critical effect chance of your Shadow spells by 5%.

Felhunter - Reduces all spell damage taken by 10%.

Felguard - Increases all damage done by 5%, and reduces all damage taken by 5%.