Flame Domain

Description of Crimson Flame clerics.

Bonus Cantrip
When you choose this domain at 1st level, you gain the Firebolt cantrip if you don't already know it.

Flame Priest
Also at 1st level, you can cripple attackers with fire and flame. When a creature within 5 feet of you that you can see hits you with an attack, you can use your reaction to cause the creature to make a Dexterity saving throw. The creature takes 2d8 fire or radiant damage (your choice) on a failed saving throw, and half as much damage on a successful one.

You can use this feature a number of times equal to your Wisdom modifier (a minimum of once). You regain all expended uses when you finish a long rest.

Channel Divinity: Blazing Inferno
Starting at 2nd level, you can use your Channel Divinity to turn fires into infernos.

When you roll fire damage, you can use your Channel Divinity to deal maximum damage, instead of rolling.

Divine Strike
At 8th level you gain the ability to infuse your weapon strikes with the Crimson Flame. Once on each of your turns when you hit a creature with a weapon attack, you can cause the attack to deal an extra 1d8 fire damage to the target. When you reach 14th level, the extra damage increases to 2d8.

Crimson Avatar
At 17th level, you have developed an immunity to all fire damage, including infernal fire and lava. When you cast a spell that deals fire or radiant damage, add your Wisdom modifier to the damage. Additionally, as a bonus action you can choose to extend a portion of your power to all allies within 15 feet, granting them fire resistance as long as they stay within the aura's range. The aura lasts a number of hours equal to your Wisdom modifier. You regain this ability after a long rest.