Ryuker
From Ephinea PSO Wiki
Ryuker is a support Technique that creates a portal back to Pioneer 2. It creates a Telepipe gate that leads back to Pioneer 2. Like a normal Telepipe, it only lasts until its user returns through it.
Unlike most other Techniques, it has only a single level that requires 150 MST to learn.
Ryuker cannot be used in certain areas, such as area warps, boss rooms and during certain quests.