Have a tracker zone into Plane of Tactics.
If you see Rallos Zek up, then you can do the event. This is known as the Fake Rallos
Make your way to the green layer on the map.
Kill Decorin Berik
RUSH all the way around to the other side
Kill Decorin Grunhork
Click the door and walk in.
You will be attacked by Tallon Zek ( fake one ) and will have to pull Vallon Zek from across the table.
There IS NO Flag for them as they are not the real ones.
Head to the spot marked fake Rallos. Kill him a little bit and he will port below into the pit.
Lev and jump down there. Kill Rallos Zek.
Hail a Planar projection for the flag.
That is it for the Rallos Event.