Many classes such as Barbarians or even Melee Sorceresses (using a Passion Phase Blade) can make great use of Dream when equipped this way. Prior to Patch 1.13, wearing two Dreams was a tactic used to stack two Holy Shock auras at the same time for very high added lightning damage. Aura stacking was not an intended feature and was fixed.
These builds are only pursued by wealthy players because high Faster Hit Recovery and All Resistances needs to be rolled to reach the correct breakpoints, which means both the helm and shield need to be rerolled many times.
10% Chance To Cast Level 15 Confuse When Struck
Level 15 Holy Shock Aura When Equipped
+20-30% Faster Hit Recovery
+30% Enhanced Defense
+10 To Vitality
Increase Maximum Life 5% (Helms Only)
+50 To Life (Shields Only)
+0.625-61.875 To Mana (Based On Character Level)
All Resistances +5-20
12-25% Better Chance of Getting Magic Items