The Aegis

The Aegis grants many boons to those who make a pact with them, and do their utmost best to protect those same people. These boons come in many forms but allow the warlock to keep themselves and many others alive. The shields granted by The Aegis revel in taking damage and ask that they take more and more, almost as if an ever consuming void.

You also have an expanded spell list that you may choose from

1st: Bless, Thunderous Smite

2nd: Aid, Flame Blade

3rd: Slow, Spirit Guardians

4th: Death Ward, Fire Shield

5th: Far Step, Wall of Stone

The Shield

At 1st level you gain proficiency with shields and the protection fighting style. This fighting style can be used in addition to another fighting style you may acquire as you level. You also gain the ability to use your Charisma modifier to add to your armor class in place of Dexterity, while wearing light armor, as your charm and wit become your armor.

The Bulwark

At 6th level, the warlock learns how to protect not only themselves, but their allies around them. As a reaction to an ally being hit by an attack, the warlock can send the energy of their shields defense to aid the ally granting them a bonus to their AC equal to the shields AC including against the triggering attack. This feature can only be used as long as an ally is within line of sight and withing 30ft of the warlock and lasts until the start of your next turn.

You may use this feature a number of times equal to your Constitution modifier (minimum of once). You regain all uses of this ability on a short rest.

The Phalanx

At 10th level, the closer you are to your allies the better you can keep them safe. As an action you may project a large barrier in front of you encompassing the spaces to your left and right. Allies occupying those spaces are granted a bonus to AC and Dexterity saves equal to the shields AC.

The Aegis

At 14th level you become an unstoppable force of defense. If any ally within 30ft of you takes damage, you may redirect half of that damage to you, ignoring resistances and immunities that you may have. If you are knocked unconscious from using this ability, you have advantage on death saving throws.

Once you are knocked unconscious, you may not absorb any damage from allies with this feature again until the next dawn.