This Holy Symbol is in an Emblem showing two crossed axes, the symbol of Clangeddin Silverbeard.  

If you wear it visibly while using the Channel Divinity: War God’s Blessing or Channel Divinity: Guided Strike class features to enhance an attack against a target, you gain the following benefit, whether the attack hits or misses:

You can use a Bonus Action to cast the 1st Level Paladin Spell Compelled Duel against the same target, without expending a spell slot, using your spell save DC and spellcasting ability.

This benefit expires at the end of your turn.

Notes: Control, Debuff, Combat