You are part of guild of warriors an defenders known as the shield wardens. Those who are part of the shield wardens and those who swear to their oath protect and fight using the same tool, their shields. The Shield wardens relinquish the luxury of weapons and instead dawn shields and use them to fight In the weapon’s stead. Under the watchful eye and leadership of Terix Armourbane, the Shield Wardens have saved countless lives from invasions, massacres, and attacks from all across the world. 

As a member of the shield wardens, your duties are simple, protect those who cannot protect themselves. You fight and defend with the same tools, a pair of shields handed to you upon joining. You have mastered the art of using these as both a lethal weapon, and also a tool of defense.

Best Offense is a good Defense

At 3rd level, as part of your training with the Shield wardens, you have been given two shields to fight with, both together count as a +2 shield and equal +1 if you only have one of the two shields. You use the shields to make your unarmed strikes, these count as 1d6 bludgeoning damage per strike and you are considered proficient with this kind of unarmed strike. Your use of the shields don't negatively affect your unarmored defense, instead adding to it. You can also expend a Ki point to send a shield careening toward your opponents, dealing the same damage as the unarmed strike.  range (20/60) you can expend an extra Ki point to rebound the shield back to you, removing the need to retrieve it.

Spirit of the Shield

At 6th level, you can send a fraction of your Ki to an ally to boost their endurance .As an action, you can use three ki points to boost the armor class of an ally within 10 feet by half of your wisdom modifier(minimum of 1) the amount of people you can boost increases to two people at 9th level, three at 13th, and four at 17th .

Ki Arcanum

Beginning at 11th level, your mastery of Ki in a defensive practice has allowed you to alter your Ki into magic. As an action you can expend Ki points to cast the following defense based spells. You can only cast these spells at their minimum level, excluding cantrips.

• Guidance. 1 Ki point
• Resistance. 1 Ki point
• Armor of Agathys. 2 Ki points
• Cure Wounds. 2 Ki points
• Shield. 2 Ki points
• Mage Armor. 2 Ki points
• Enhance Ability. 3 Ki points
• Lesser Restoration. 3 Ki points
• Healing spirit. 3 Ki points
• Beacon of hope. 3 Ki points
• Counterspell. 4 Ki points
• Mass Healing Word. 4 Ki points
• Fire shield. 5 Ki points
• Stoneskin. 5 Ki points
• Mass Cure Wounds. 6 Ki points
• Greater Restoration. 6 Ki points
• Mass Heal. 15 Ki points
• Invulnerability. 15 Ki points 

Guardian of the Shield

At 17th level, your mastery of defending has molded your Ki to this purpose and you become a guardian of those around you. As an action, you can expend 3 Ki points to give all allied creatures within 30 feet of you the following effects:

• 3d10 + your wisdom modifier temporary hit points.
• Advantage on dexterity based saving throws.
• The creature can take a reaction after taking damage to make one melee weapon attack on the attacker.
  The effects last for a minute or until the temporary hit points are removed.

You cannot use this feature again before a long rest.