@Aereus
Teleportation here is pretty weird, in the WN/LN teleport has more similarities with Dragon Ball's teleportation rather than a portal so the trick of pulling your enemy on the portal and close it for an insta kill is impossible. And for teleport other living being with you there're two methods:
[ol]Direct contact between the user and the other person[/ol]
[ol]Use wide range teleportation[/ol]
Note: The MP cost of teleportation depends of how many persons and their weight, and to teleport very big creatures (Mother) "Long Range Teleportation" is a must even if the distance between the two points is short.