You always have one last trick up your sleeve.

Prerequisite(s): Arcane trickster level 3rd, resiliency rogue talent

Benefit: When you activate your resiliency rogue talent to gain temporary hit points, you may also activate any 1 of the following spell effects for a duration of 1 round per 3 caster levels: invisibility; haste; levitate; or protection from energy . Your caster level for these effects is equal to your caster level. In order to use any of the effects listed you must know the spell or have it scribed in your spellbook, but you need not have it prepared.