Dungeons/Legendary

Horn of the Foal
Description
+15% Crit Chance, +600% Crit Dmg, and -60% max HP. Oh, and Non Crits deal no damage.
Increase per level
+15% crit dmg, all else equal.
Unlock Requirement
Unlock this item by completing 'House Flipper' from Blunder Hills

Stone of the Bulwark
Description
-85% attack speed and mana regen. +30% Block chance and +500% damage.
Increase per level
+10% damage, all else equal.
Unlock Requirement
Unlock this item by completing 'I Sawed...' from Frostbite Tundra

Triad of Manafine
Description
+100% Max Mana, +120% Atk cooldown spd. +2% Mana regen every hit, but no more passive regen.
Increase per level
+0.1% mana regen per hit.
Unlock Requirement
Unlock this item by completing 'Matrix Wickermen' from Hyperion Nebula