Servant of the Staff
Medium Shadow Humanoid
Summoned Creature (Minion)

HP 1; a missed attack never damages a minion.Defenses your defenses, not including any temporary bonuses or penalties
Speed land 6 phasing

Shadowy Invisibility

The servant is invisible in dim light.

⚔ Shadow Touch (necrotic) ✦ At-Will

Attack: Melee 1 (one creature); your level + 5 vs. Reflex

Hit: 3 + your Charisma modifier necrotic damage, and the target is slowed until the end of your next turn.

Published in Mordenkainen's Magnificent Emporium, page(s) 109.