Oath of The Sacred Flame

The Tenets they abide by are as Follows

Guidance

With the Flames radiance guide those who are in need be the light that shines on the road ahead

Protection

Protect those who cannot protect themselves, Allow them protection in the Flames Holy Grace

Fury

Though you must have mercy for those deserving, at any time in which darkness begins to consume the light you must fight until your last breath to preserve the Flame  

 

Channel Divinity

Aelfric's Shield 

 You can use your Channel Divinity to invoke the Sacred Flames grace and shield your allies, choose an ally within range and grant the ability to reflect the next magical attack back at the attacker for half damage

Aura of Fire

Beginning at 7th Level you and all allies within 20 feet of you are granted resistance to fire damage

at 18th level the Range is increased to 60 feet

Undying Flame

Starting at 15th level when you are dropped below 0 hit points you can instead choose to remain at 1, hit point after which your body is engulfed in blue flames and your AC is Raised by 5 all attacks deal an additional 1d10 fire damage  this is increased to 2d10 at level 18,

this effect remains active for 3 turns, until you are brought below 0 again or when you are healed. 

when the effect ends you are dropped to 0 hit points and must begin to roll death saves unless the effect ended by healing. 

Champion of the Sacred Flame

At 20th level you can assume the form of a Champion of Aelfric your body becomes engulfed in a bright blue fire eyes begin to glow as crackling blue energy emanates from your form, as an action you can cause this transformation to occur it lasts 5 turns once the 5 turns are up you are burned out and cannot use magic until you take a short rest while in this form you gain the following bonuses

• all allies within 10 feet of you are able to perform a regular attack as a bonus action
• you and all allies in 10 feet of you become immune to fire, cold,  necrotic, and curse damage 
• when an enemies hits you with an attack you can force them to make a Dex save of DC 17 on a failed save they take 4d10 fire damage
• all attacks you perform that cause fire damage have their damage doubled