Grease, Entangle, etc...

[JesterOI]

Any chance of making all these types of spells act just like Stonehold, and work as soon as they are cast?

I would suggest these types of spells that have a hold or disabling effect:
1. When cast it causes a roll immeditely.
2. Starting the round after they are cast and for the rest of their duration, the roll for these spells is the first thing done each round so as to prevent targets from doing things they shouldn't be able to do while affected by these spells.
and
3. The lower level spells should be changed to a duration of 5rounds+1round/2levels to make them useful at lower levels.