Erase Knowledge

You attempt to remove knowledge of a person, event or location from the memory of everyone in the world. When you cast this spell, you designate one person, location or event. This spell targets anyone who has memory of what you designated. If someone has seen what you designated in the past two months or had heard of it in the past month, they are unaffected. This spell is unaffected by language barriers, however if the person does not recognise certain things as being part of what you designate, they will not forget it. For example, if you designate a war, someone who viewed it as three separate wars would be unaffected and someone who thought a group of adventurers were just one person would not forget them.

Affected people will fail to recall anything about the event, including things they relate the event. This may include a king who lead a war you designate, someone in charge of a location or the pet of the person you designate. Whenever an affected person hears mention of the thing you designate, or sees it in person, they may make a save against your spell save DC, remembering everything they forgot on a success. Also on a success they realise they had been magically enchanted.

Also, any mention of the event in a book or story is also erased. Text erased this way leaves a noticeable smudge, though anyone who remembers the text will rationalise the missing text in a way that makes sense and will never remember the text ever being there. Because of the noticeable marks left on the pages, someone who knows about this spell may be able to back-translate what the text says. They may make a DC 20 Arcana check to uncover the general meaning of a passage.

The stress of casting this spell weakens you. After enduring that stress, each time you cast a spell until you finish a long rest, you take 1d10 necrotic damage per level of that spell. This damage can't be reduced or prevented in any way. In addition, your Strength drops to 3, if it isn't 3 or lower already, for 2d4 days. For each of those days that you spend resting and doing nothing more than light activity, your remaining recovery time decreases by 2 days. Finally, there is a 33 percent chance that you are unable to cast Eraze Knowledge ever again if you suffer this stress.