Wraith snaps up from the ground and sends his dueling sword straight into the mass of the skull lord, bringing his dagger and a another slash to bear for good measure.

Spoiler: Rolls
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Going to make a single death attack and two other attacks after spending a panache point to kip up from prone as a swift action.
Death Attack, Fort save of 13 (1d20+13)[15], dealing (1d8+14)[19] with sneak attack (if the death attack fails) (1d6)[6]
Second sword attack (1d20+8)[28], dealing (1d8+14)[17]
Dagger attack (1d20+10)[15], dealing (1d4+11)[13]