I have created this item as a way to discover lore and history in a unique way for my campaign.
Wondrous Item, Rare
When a spell is cast into this 10-inch diameter, semi-transparent, glowing orb, the holder is paralysed for 10 minutes. The holder becomes unaware of their own body and their surroundings during this duration and instead will relive and experience the memory that is stored within the orb. The holder experiences the whole range of senses the original host had produced, whilst still retaining their own consciousness. The spectator feels as if they are in the host’s body, doing its actions.If the original host casts any spells during the memory and the spectator is capable of casting that spell also, they will learn that spell at the end of the memory
The holder is unable to end the memory and must spend the whole 10 minute duration viewing the memory. There is no way to remove a memory from an orb except a Wish spell. It is also immune to modify memory.
A blank memory orb has an additional feature:
When the person holding the sphere spends an action to touch the sphere to the forehead of someone, the target must make a DC 15 wisdom saving throw or have 10 minutes of their memory from the past week removed and placed into the sphere. A creature can willingly choose to fail this saving throw.
Does this have any unintended, game-breaking problems? If it does, is there a way I could balance them?
Note: I have thought about possible combat uses, such as touching it against an enemy, then casting a ranged spell into the orb whilst it is touching them, could active the orb and paralyze the enemy for 10 minutes. Is this a possible problem or would the difficulty of getting an enemy to hold the orb in place long enough to cast a spell into it (not to mention the incredibly high AC in order to specifically hit the orb) be enough to balance out the immediate paralysis?
Edit: I understand that "If the original host casts any spells during the memory and the spectator is capable of casting that spell also, they will learn that spell at the end of the memory". doesn't make a whole lot of sense.