Changes

When you deal Cold damage to a creature within 10ft of you, you can use your reaction to use this Channel Divinity Option, forcing it the creature to make a Wisdom saving throw. On a failed saving throw, the creature freezes solid; The creature is subjected to the Petrified condition, granted immunity to Cold damage, and inflicted with vulnerability to Fire damage. However, you must concentrate to maintain this effect, and the creature is entitled another Wisdom saving throw at the end of each of your turns to escape the effect. Additionally, if the creature suffers any amount of Fire damage, the effect immediately ends.