Armor set: Shulker Shell Armor

Shulker Shell armor would be obtained by upgrading Iron armor on a Smithing Table, using 4 Shulker Shells per piece of armor

The defense provided by the armor would be 20 armor points and 5 toughness points per piece, but the durability would be 30% more than Iron armor; also, every piece of armor would give +2 Knockback Resistance

Also, while weraing the full set, the player would be immune to the effects of Levitation and Slow Falling, and the armor wouldn't be damaged by projectiles, while still reducing their damage