While this is funny, I doubt it is by design, that the Headdress' Turn Undead causes Inner Guardians to Flee.

civilized <91%hp(1054) 11%m(120) 26%mv(314) 24350tnl(-26.49%)> 1 PM
Hyetian, the great winged devil closes his eyes for a moment and nods at the Lich Coprophagous.
The Treant's beating maims the Lich Coprophagous!
The Treant's beating MUTILATES the Lich Coprophagous!
You parry the Lich Coprophagous's cleave.
The Lich Coprophagous's cleave EVISCERATES the Treant!
The Lich Coprophagous's cleave MUTILATES a lion!
You parry the Lich Coprophagous's cleave.
The Lich Coprophagous utters the words, 'qfuwsabru gqajfoz'.
A lion's claw MANGLES the Lich Coprophagous!
A lion's claw MANGLES the Lich Coprophagous!
Your searing cut DISMEMBERS the Lich Coprophagous!
The headdress of Galadriel flashes pure white!
Your holy wrath >>> ANNIHILATES <<< the Lich Coprophagous!
The Lich Coprophagous has fled!
The Lich Coprophagous leaves west.