Warlocks are wizards that really wish they were warriors. Or Rogues. Or cheesemongers. Anything but wizards, really. Their "spells" (as they are) serve to make them less wizard-like in a variety of ways.
Puissant TouchWhy mess about with incantations, gesturing, and smelly powders? Just use your hand to inject burning-raw magical energy directly into your enemie's flesh.
Chronomantic TwistThrough raw force of magical energy, you can twist the fabric of time itself around your body for several moments, alowing you to move and act while others are still -- beware though, for your time-debt must be repaid in full immediately afterward.
Arcane CapacitorOpens a gate to the 11th realm which charges up you weapon (or boot) with a fearsome melange of energies primed to unleash arcane destruction. Beware - act too soon, and the charge will be weak; act too late, and it cannot be contained.
ManacalypseYou can unleash all of your mana in a giant flood, dealing heinous damage to everything in your vicinity and wrenching yourself out of your Empowered form. Also, your Empowered form becomes significantly tougher and more manaful.