The idea was something akin to a bolt, more quanta fed, more damage dealt, or something like that.
But multiple modes...Hrm...Well, multiple modes might be more of a
type dealie, I'm not sure where a spell like that could go.
Perhaps with
it could be one of three effects:
1.Applies a 'corruption' buff, that turns the creature into a darkness type, and grants it +1/+1.
2. Grants the vampire effect without the poison.
3. Lycantropy-level buff, but applies poison (often times in werewolf mythos the wolf side is destructive beyond what a normal wild animal might be.)