Chronostasis

As a Chronurgy wizard, bending time to your advantage reaches its peak. You gain the ability to stop time with this spell, time is stopped for 1d4 minutes, you may do anything within that time as long as it does not affect a creature other than you or an object being worn or carried by someone other than you, otherwise the spell will end. (Ex: Casting the light cantrip on something other than yourself, or stabing someone) 

However, the accumulation of everything you physically do during that time builds up into one large instance of fatigue when the spell ends. If the spell ends early, use the nearest minute.

1 minute- no drawback

2 minutes- One level of exhaustion

3 minutes- Two levels of exhaustion

4 minutes- Three levels of exhaustion