Thoughtseize

You attempt to reach into a targets mind to rip their knowledge from them. 

As an additional cost to cast this spell, you take 1d6 Psychic damage. This damage cannot be prevented in any way.

A creature you can see within 60 feet must make an Intelligence saving throw. On a failed save, you may choose up to two of the following options. You immediately learn the information provided by each option as you choose it.

• You learn whether the target can cast spells, and if so, you learn up to three of those spells at random.
• Choose a spell. If the target knows the spell, it must make an Intelligence saving throw. If it fails, the target cannot cast the chosen spell for the next minute.
• You know of any Resistances and Immunities of the target. 
• You know of any Vulnerabilities of the target.
• Choose a number. You know if the target’s AC is equal to, greater than, or less than that number. You may choose this option more than once.

If a creature that has failed the saving throw within the last minute is the target of another casting of this spell, they automatically succeed on the saving throw.