A strange (but basic) NND question

[JmOz]

1) I have noticed that it is normal practice to base the defence of a NND on a power (IE Life suport seems to be the most common), do you have to, or could you name a power type

Ex: The choking hands of Uklu: 1d6 RKA, NND, Does Body, 0 end, continous, AE: Accurate

with the NND defence being having spell casting abilities?

2) Can it also be having them do something?

Same power as above, stops if/when the character makes a magic skill roll

[Steve Long]

The rules define a lack of anything (e.g., “not being a dwarf”) as generally an invalid defense for an NND. This should generally include being something as well (e.g., “being a dwarf” or “being a spellcaster”), since that makes it too easy for the character to know whether his NND will affect a target, and thus to min-max the benefits of having the power.

Making a Skill Roll is definitely not a valid defense for an NND. Either the target has the defense, or he doesn’t. If you want to simulate something like that, I'd suggest putting an Activation Roll on the NND.