It is undeniably a warlock buff. Drain mana's effect was increased by 50%, but even the best-geared players have around only ~450 resilience, which is a 22.83% reduction of mana drain on the PTR. So on live right now, a warlock drains 200 mana/s. On the PTR, against a target with 450 resilience, a warlock drains ~231.51 mana/s.

Drain Mana was the weakest out of the various mana damaging skills to begin with, but seriously, a warlock buff?

Oh yeah it's definately a buff, I was jsut saying that for a well geared PVP'er it's not as drastic as it first looks.

Great to hear about the warlock buff especially since that ability was nerfed pretty bad before. Still not amazing but anything too crazy would cause players to get up in arms =\

Definetly an buff to warlocks, but also nerf hunter/priest mana drains.

Thank goodness, we all know how hard a time lock's have in pvp as it is!

Overall, even after resilience, it was still a buff to Locks mana drain. Locks compose a major part of mana drains teams, so this buffs mana drain teams.

Mana drain in general needs major nerfs, not buffs. What the hell was Blizz thinking?