Staff of Arcane Blessing in Act1, Underdark tower...man this thing is hard to unequip if you have a cleric blessing. It adds an effect that stacks with regular Bless that gives another d4 on attack rolls and 2d4 on spell attack rolls.
Deathstalker's Mantle...ridiculously OP. Comes early-midgame Act 1 from the Dark Urge storyline, and you can't miss it. Once a turn when you kill something you get instant invisibility for 2 turns. And you can give it to anyone it is not bound to the Dark Urge.
