Warlock whispers an incantation, immediately restoring [168/337/675] health to a friendly unit and [56/112/225] a second over 3 seconds, or damaging an enemy unit for [75/150/300], every second for 3 seconds.
Some secrets are meant to be kept... Demnok will pay for his lack of discretion. - Anessix, Biding Time
Warlock 3 star effect
At three stars, while alive Warlock prevents friendly Demons from silencing each other when casting abilities.