Befuddle

You attempt to interrupt a creature in the process of taking an attack or move action. The target must succeed on an Intelligence saving throw or become confused, forget what it was doing and stop it's current action. The target may use any of it's other unused actions, bonus actions or reactions for this round. 

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, the target also loses it's reaction for the current round.