Originally posted by TheLordofMurder
False...It succeeded the 1st time he used it and it destroyed Loki...
Loki was only able to survive it the 2nd time with prep (as the past Loki was brought to the present and saw a vision of Thor striking him down with Soul Suck and was to flee his body seconds before being struck down by Soul Suck the 2nd time around)...
It had been used only one time. Loki let Thor think he killed him.
It was his plan all along.