You are suppose to transport to a dead body, and at the same time, get X points of life and X points of energy. So...
Here is the situation. I am fighting in PvP. Everything works well for me. Except that there is this big Warrior coming towards me with his big hammer. He starts bashing on me. Life Siphon, but his strikes are very powerful. "Hey, now is the time to transport across the map with Consume corpse" i say to myself. Click!
I end up at the end of the corridor but... but... an "imaginary" hammer hits my head and I end up dead! What is the use of this crappy skill if the "transporter" brings over the weapon that is attacking you? This skill sucks!