No offense but... this spell should be removed from the section.
Why? Its basically useless to create a illusion that stands next to you. The essence of Dopplewalk is its power to confuse the enemy. Anyone can easily spot someone casting this spell, which leads to: failure
Ghan has said he has fixed this. Monovertex please confirm this fix. This was only a problem with people that had signatures in the upper levels like not the special members but the respected members.