Warlock talent · row 2 of Demonology, from level 15 (10 with Talented 5/5) · Physical

Demonic Energies

You heal your pet for 8/15% of all spell damage you deal. When you gain Mana from Life Tap, your summoned demon gains 50/100% of the Mana you gain.

Game files · build 1.60.1.70291New in ForeverRead straight from the WoW Forever beta client.

In Blizzard's notes

What Blizzard said about Demonic Energies, each line checked against the files.

Matches the files
Demonic Energies: (New row 2 talent.) You heal your pet for up to 15% of all spell damage you deal. When you gain Mana from Life Tap, your summoned demon gains up to 100% of the mana you gain.
The files Demonic Energies (1225214) is Demonology row 2: it heals your pet for 8/15% of your spell damage and gives it 50/100% of the Mana you gain from Life Tap (tooltip).
Demonic Energies Class deep dives: Rogue and Warlock

69876 Sep 16First beta build we archived. No changes in the client files since.