just do it on a phase based command
check if it is vampire
if vampire, check if phase == 1234
if not create phase 1234 and teleport to the map...
and dun!
no it aint that hard ... just use your brains if you cant go from A to A in 1 way
go to A by going to B first ....
if you cant folow it, just stop hosting, and play somewhere els