Thought Phantom
Medium aberrant magical beast
Summoned Creature

HP your bloodied value; Healing Surges none, but you can expend a healing surge for the thought phantom if an effect allows it to spend one
Defenses your defenses -2, not including any temporary bonuses or penalties
Speed 5

Vanish into the Void Aura 2

You gain a +2 power bonus to Stealth checks while you are in the aura. The thought phantom is invisible, so it has total concealment and combat advantage against any creature that cannot see it somehow.

Standard Action (psychic) At-Will

Attack: Melee 1 (one creature); your level + 3 vs. Will

Hit: 1d8 + your Charisma modifier damage, and ongoing 5 psychic damage (save ends).

Minor Action At-Will 1/round

Effect: The thought phantom either walks, shifts, runs, stands up, squeezes, or crawls.

Opportunity Action At-Will

Trigger: An enemy adjacent to the thought phantom hits you.

Effect: You become invisible until the start of your next turn.

Published in Dragon Magazine 393.