Some Magic Is Too Powerful to Sustain

Baron Mordo:

This is a relic. Some magic is too powerful to sustain so we imbue objects with it, allowing them to take the strain we cannot.

This is the Staff of the Living Tribunal….

There are many relics: the Wand of Watoomb, the Vaulting Boots of Valtorr….

Doctor Strange:

They just roll off the tongue, don’t they?

— “Doctor Strange” (2016)