The user who activates the ability of this sphere can create an instant illusion on up to 5 creatures that are not hostile to it. If the creatures are hostile, they must fail the saving throws wisdom (18) to fall under the effect.
When activated, the creatures are almost transported into the dome and begin to see whatever illusion the bearer wants to create as long as it is a nightmare. The illusion lasts for one minute and during that time, the targets are motionless and incapacitated. The wielder must be in contact with the item during the illusion or else they too will succumb to the power of the Dark Dome of Nightmares.

Notes: Incapacitated, by a wizard, warlock, sorcerer and bard