The astral fetters ability prevents astral travelling spells from taking effect on the field of battle. Spells such as Blink and Returning may still be cast, but have no effect. This ability also negates the effect of a Ring of Returning. This ability has no effect on creatures with Void Sanity.

Ritual of Returning will also fail to trigger, however the effect will not be removed from a commander who has it.

This ability is extremely rare, and is possessed only by the three forms of the doom horror Umor - Eater of Gods and the Floating Mind aquatic pretender chassis.