Medleg's Time lock

You distort time in a small area, everyone in a 10ft cube within range must succeed on an intelligence saving throw or be stuck in a time lock. If the target has a positive dex modifier his AC is lowered by that amount and if locked in this way the target must make an intelligence saving throw at the start of each of its turns. If it fails, it wastes its action that turn doing nothing.

At Higher Levels: If you cast this spell using a spell slot of 5th Level or higher, the affected area increases by 5 square feet. As in: 5th level 15ft cube. 6th level 20ft cube and so on.

In addition the range of the spell increases to 70ft at 6th level and to 80ft at 8th level