#151 Spells with multiple effects shouldn't have those effects resisted separately

[Phil Hall]

This can lead to some strange cases where part of the spell works but the other part does not (Rust is a good example as it first applies the Rusted promotion then tries to remove the weapon promotions).

This can also result in the player seeing confusing resist messages. This is not necessarily a big deal, but I wanted to add an issue here for future reference.