6th-level enchantment

Casting Time: 1 action
Range: 60 feet
Components: V, S
Duration: 1 day

You mentally hide the instructions of an action from another creature’s mind.  When you cast this spell, choose an action from the action list and a creature in range.  It must succeed on a Wisdom saving throw or forget the action for the spell duration.  For the duration of the spell, when a creature attempts the action if must attempt an Intelligence saving throw to do the action or the creature stands dumbfounded as it struggles to remember how to do the action taking no action.  If another action would use the action such as an ability that uses multiple attacks and the mental block targets the attack action, the creature would need to make an Intelligence save to do the action but not multiple times in one turn.

At Higher Levels: When you cast this spell using a spell slot of 7th level or higher, you can target one additional creature for each slot level above 6th. The creatures must be within 30 feet of each other when you target them.