I'm not quite sure what the intent is with this power. As far as I can tell there are two possibilities:
The power creates a new piece of equipment for the caster, which is just a normal melee weapon with Enhancement Strength a and Instant Death.
The power grants the caster Enhancement Strength a and Instant death, meaning other weapons held by the caster would benefit from the power.
Which of these is the correct way for the power to act, or is it something different?