Fighter Martial Archetype

Defender

Defenders are stalwart protectors who are specially trained in brutal physical combat. Some love the thrill of an intense battle, while others seek new ways to challenge their physical prowess. In the presence of a large army, others may cower in fear, but a Defender does not flinch, instead standing his ground. They may not use magical powers, but Defenders are always prepared to fight.

Some Defenders view fighting as a necessary evil to achieve peace, while others prioritize loyalty to their comrades, who they want to protect at all costs. Defenders are primarily concerned with preventing harm to those around them, so they willingly put themselves in harm's way to protect their allies.

Impenetrable Wall

At 3rd level, when a ranged attack passes within 5 feet of you, if you are holding a shield, you can use your reaction to intercept the attack with your shield, causing the attack to hit you instead. Make a Constitution saving throw against the attack's save DC. The attack deals half damage to you on a failure and no damage on a success.

Steadfast

At 7th level, you cannot be frightened or intimidated.

Unflinching Resolve

At 10th level, if you fail a Constitution saving throw, you can reroll it. You must use the new roll.

Pummeling Attack

At 15th level, you can make a single melee attack with a shield you are holding as a bonus action. Additionally, whenever you attack with your shield, you can add your proficiency bonus to the attack roll.

Living Fortress

At 18th level, whenever a hostile creature within 60 feet of you who can see and hear you targets a creature other than you with an attack or a harmful spell, they must first make a Wisdom saving throw. On a failed save, the creature must target you or lose the attack or spell. The spell doesn't protect other creatures from area effects. A creature that succeeds their saving throw against this effect is immune to it for the next 24 hours.

Art Credit

"Fire Giant Dreadnought" by WotC 2016 and "Hell Wallpapers Download #FR55EV7" by Josefine Mcferron