How about a cleric domain for DnD Next?
You are an avatar of winter. You are the living embodiment of the trial cold bring to all who live in where snow falls. You sort the weak from the strong. You must root out the weakness in others and destroy it, through whatever means necessary. Those who cross your path and are unworthy will never see the light of day again. You’re god doesn’t desire worship as much as fear!
Cleric Level Spells
1 Sleep, Gust of Wind
3 Blur, Phantasmal Force
5 Sleet Storm, Slow
7 Evard’s Black Tentacles, Ice Storm
9 Cone of Cold, Cloudkill
11 Circle of Death
15 Power Word Stun
You gain the Ray of frost and and chill touch cantrips if you don’t already have them. You also gain extra domain spells at levels 11 and 15, as shown in your Domain Spells table.
Hasten the End
When a creature that you can see falls to or below 0 HP, you can use your reaction to cause the creature to die that much faster. The creature must make an Constitution saving throw with the DC equal to your spell casting DC. If they fail, the immediately die or count as having failed a death roll. Any spellcaster that attempts to prevent the creature dying must make an apposed spellcaster roll to prevent this effect or stabilize the creature.
Channel Divinity: Frostbite
Starting at 2nd level, you can use your Channel Divinity to harness the bitter cold of winter . As an action, you present your holy symbol, and any fires are extinguished within 25 feet of you is dispelled. Spells that have the fire effect are given an opposed check by their creators using their spellcasting bonus vs your spell casting bonus + d20 roll. Additionally, each enemy creature within 25 feet of you must make a Constitution saving throw. A creature takes cold damage equal to 2d10 + your cleric level on a failed saving throw and half as much damage on a successful one.
Channel Divinity: Icy Strength
At 6th level, you gain the ability to bestow the blessing of winter to yourself or an ally with your Channel Divinity. As an action, you present your holy symbol, and you or an ally gains an extra 1d6 cold damage on any attacks to perform as well as gaining resistance cold. At level 12 this bonus increases to 2d6, and at level 18 this bonus increases to 3d6.
Heart of winter
Starting at 20th level, you can use your action to turn an area into the deepest winter for 1 minute or until you dismiss it using another action. You become a creature of pure ice and emit waves of cold in a 50¬foot radius. You gain resistance cold and to weapon attacks. All creatures in the area without cold resistance must make Constitution checks every turn or take 4d6 cold damage and be restrained by the ice.
What do you think?