Channel Divinity : Turn Undead

Each undead that can see or hear you must make
a Wisdom saving throw. If the creature fails its
saving throw, it is turned for 1 minute or until
it takes damage. A turned creature must spend
its turns trying to move as far away from you as
it can, and it can't willingly move to a space
within 30 feet of you. It also can’t take reactions.
For its action, it can use only the Dash action
or try to escape from an effect that prevents it
from moving.