Lobain, the Inviolable Prison

Equipped creature has indestructible.
You can't move Lobain, the Inviolable Prison from one creature to another by playing its equip ability.
Whenever a creature called "Saphia, Bearer of
the Queen" comes into play, attach Lobain, the Inviolable Prison to it.
when Lobain, the Inviolable Prison leaves the battlefield, destroy the equipped creature.
Equip {3}