Slime-in-a-Skull

Within this magically shrunk wyvern’s skull resides a friendly ooze who wishes only to be helpful to the owner of its home. Joyful gurgling sounds can occasionally be heard emanating from the eye sockets and, very rarely, a curious eye will peek out of the mouth.   The skull has 2 charges and regains all expended charges daily at dawn.   Summon Ooze. While holding the skull, you can use an action to expend 1 charge and call forth the ooze that lives within. It expands into its normal Large size in an unoccupied space within 5 feet of you. The ooze uses the wyrmskull ooze stat block and returns to the skull when it drops to 0 hit points or after 1 hour. If the ooze is reduced to 0 hit points, it can’t be summoned again for 1 hour. The ooze is an ally to you and your companions. In combat, it shares your initiative count, but it takes its turn immediately after yours. It obeys your verbal commands (no action required by you). If you don’t issue any, it takes the Dodge action and uses its move to avoid danger.