Pendrell Vale

Pendrell Vale was a valley located in Tolaria on Dominaria. It is known for its mists, and the mysterious The Tabernacle at Pendrell Vale in its midst.

The vale emanated strange magics that inhibited the use of summoning magic, allowing any mage who taps into its power the ability to force their foes to expend great quantities of mana to keep summoned creatures from disappearing into nothingness. These strange properties may have been a result of Urza's failed time travel experiments.

After the destruction of Tolaria, Pendrell Vale's magic continued to emanate, calling out to certain Magus of the Tabernacle  who took to worshiping the ancient Tabernacle.

Continuity
In the Legends Cycle I is told of Tabernacle at Pendrell Vale in Jamuraan Scarwood. This is not explainable.