Pass fail move to next spell script

[ZippyDSMlee]

I thought I had one in my notes but I can't find them. What I would like is a script that dose something like first spell random 1% if fail move to next spell at 10% if fail move to next spell at 30% if fail move to next spell 100%

I forget if its if or else if...uhg...... if anyone wants to do it as an array that be fine. Doubt I could do it in conditionals just don't apply the spell if it has one of the spells on it.