Astral Trapping – The ability to keep an astral form on the astral plane. Astral Trapping is also known as Astral Imprisonment, Astral Plane Tap, and Ghost Trapping.
The Shadow King (Marvel) prevents the astral selves of the X-Men from returning to their bodies.
Baron Mordo (Marvel) doesn’t trap the astral form of Doctor Strange but prevents the astral form from returning to its physical body which achieves the same effect (Strange Tales V1 #121).
Zota of Pergamum (Marvel) uses a supernatural light to trap the astral form of Doctor Strange in Strange Tales V1 #124.
Adria (Marvel) captures Doctor Strange in Strange Tales V1 #143 (1966).