Maybe Kayotics

Demonic Energies Rank 1

Passive

You heal your pet for 8% of all spell damage you deal. When you gain Mana from Life Tap, your summoned demon gains 50% of the Mana you gain.

Demonic Sacrifice Rank 1

Instant

When activated, sacrifices your summoned Demon to enhance the opposing aspect of your power, granting you an effect that lasts 2 hrs. The effect is canceled if any Demon is summoned. Imp: Increases your Shadow damage by 15%. Voidwalker: Restores 2% of your total Mana every 4 sec. Succubus/Incubus: Increases your Fire damage by 15%. Felhunter: Restores 3% of your total Health every 4 sec.

Master Summoner Rank 2

Passive

Reduces the casting time of your Imp, Voidwalker, Succubus, Incubus, and Felhunter Summoning spells by 4 sec and the Mana cost by 40%.

Fel Domination Rank 1

Instant · 5 min cooldown

Your next Imp, Voidwalker, Succubus, Incubus, or Felhunter Summon spell has its casting time reduced by 5.5 sec and its Mana cost reduced by 50%.

Demonic Brand Rank 3

Passive

Your Searing Pain generates 50% less threat and brands the target for 10 sec. Your pet's next 6 attacks against the target deal 83 to 86 Fire or Shadow damage based on the pet. If Shadow damage is dealt, it has high threat.

Improved Felhunter Rank 3

Passive

Increases the Attack Power reduction of your Felhunter's Tainted Blood, the healing of its Devour Magic, and the detection level of its Paranoia by 30%, and reduces the cooldown of its Spell Lock by 6 sec.

Soul Link Rank 1

Instant · 275 Mana

When active, 30% of all damage taken by the caster is taken by your Imp, Voidwalker, Succubus, Incubus, or Felhunter Demon instead. In addition, both the Demon and the master will inflict 3% more damage. Lasts as long as the Demon is active.

Demonic Knowledge Rank 3

Passive

Increases your spell damage and your Demon pet's spell damage by up to 100% of your level while you have a summoned Demon pet active.

Master Demonologist Rank 3

Passive

Grants both the Warlock and the summoned demon an effect as long as that demon is active. Imp - Increases Fire damage done by 6%. Voidwalker - Reduces Physical damage taken by 6%. Succubus/Incubus - Increases Shadow damage done by 6%. Felhunter - Reduces Magic damage taken by 6%.

Demonic Pact Rank 1

Passive

Your Demonic Sacrifice effect is no longer cancelled by summoning a different Demon pet. Resummoning the sacrificed pet will still cancel the effect.