Spirit Whispers
As an action you can attempt to speak through your dead ancestors to a creature within range as specified in the Message cantrip, having them deliver the message. Using this feature requires no components (V, S, M). You can use this feature a number of times equal to your proficiency bonus, regaining all uses on a long rest, or once per day, half on a short rest (rounded down). After all uses are expended you may still use this feature but must roll on the Voices from Beyond table.
Sudden Cacophony
When you are hit by an attack roll, you can use your reaction to channel your haunting spirits, letting their voices howl through you. If the attacker can hear you, add your proficiency bonus to your AC against that attack, potentially causing it to miss. Immediately after you block an attack using this trait the voices of the spirits become too loud to ignore, and they consume you. You may use this feature once per long rest, and can continue to use it by rolling on the Voices from Beyond table.
Messenger of Death
You can make your spirits drag a dead person’s soul towards you to interrogate. You may ask questions as specified in the Speak with Dead spell except you can only ask two questions. You may roll on the Voices from Beyond table to be able to ask five questions instead. Once you use this feature you must finish a long rest before using it again.