I have been working my way through the spells, and I have noticed that with some spells (particularly Odivshe) the listed duration is worded differently.
For example Footfall of Dhivu (Odivshe V) lists duration as:
(Basic) ML×10 Seconds (Maximum)
(CS) ML×30 Seconds (Maximum)
whereas most of the spells I have been reading, including Hand of Ulmer (Odivshe V)read:
(MS) SI×10 Seconds
(CS) SI×30 Seconds
Should I read (Basic) as Marginal Success (how I've been treating it), or do some spells not require a roll for the "basic" version of the spell?