Testudo(Multiple Shield Style)

You have done extensive training on using more than one shield to defend yourself with. You must not be encumbered by holding multiple shields. If so, you do not gain any bonuses, and only the drawbacks of wielding more than one shield.

Benefits

• When wielding an additional shield, you gain an additional +2 to your AC; this is treated as half-cover. This means that you do not gain the benefit of half-cover when hiding partially behind an object. If you put your back to an object of equal size to you, you may instead gain an additional +5 to your AC instead; this is treated as three-quarter-cover.
• Your unarmed strikes can deal bludgeoning damage equal to 1d6 + your Strength modifier on a hit when attacking with a shield.
• If you successfully hit an opponent with your shield, you can use your bonus action to take the Shove action. The target must be no more than one size larger than you and must be within your reach. you make a Strength (Athletics) check contested by the target's Strength (Athletics) or Dexterity (Acrobatics) check (the target chooses the ability to use).

Drawbacks

• When making unarmed attacks while wielding two shields, you roll with disadvantage.
• During combat whilst wielding multiple shields, you take a -10 feet penalty to your movement speed due to being on the defensive.
• You also have disadvantage on Stealth checks whilst wielding multiple shields.