Script to add spell to a base magic effect?

[ZippyDSMlee]

I'm half on and half off wanting to give up modding and creativity but this idea won't leave me alone so I thought I'd take a stab at a few things before i quit for awhile.

Can you add a spell to a base magic effect, like add a longer poison effect to a poison, assuming I am not looping a base magic effect. I thought it might be a more efficient way of doing things instead of just piling on in the alchemy/spell boxwes.

My original train of thought was to add halving health regen(but boost it for health potions so they can heal) and change poison damage to 1-2 but have it last 30 seconds and go up from there for the 3-6 levels of poisons , lingering lasting even longer.