Wraith Gate, Warp Gate, Way Gate...I've heard it called all of these.
Here is my work in progress of a large Wraithgate. Inspired by the Dawn of War pc game. I'm sure we will find a use for this in Apoc games or some scenarios.
I wanted it to be big enough to warp in Falcons and Wave Serpents. Hopefully the new Planetstrike book will have some rules for a Wraithgate in it.