Meridia's Blessed Armor is a heavy armor set. When you block an attack, you have a 33% chance to blind the attacker, causing them to miss all of their attacks for 5 seconds. This effect can occur once every 10 seconds.
Meridia's Blessed Armor is part of the base game and drops in Coldharbour in the Overland content. You can also find it on Guild Traders. Each set item is bound on equip. You can acquire heavy armor, jewelry and weapons for this set in the Primal motif style.