It possibly requires "Shivering Isles". I tested on a nowadays version of the game, and the expansion comes embed in it.

Added few custom spells: bound silver weapons, bound bow with arrows, some destruction spells, new summons etc.
The magicka consumption of some of these custom bound weapons and armors spells has been reduced.

The transparency of "Ghost Effect" on custom NPCs and horses has been reduced. Code has been added to make the "Ghost Effect" disappear faster from "Player". Also "Menu mode" checks if "Player" is not ridding, then removing the "Ghost Effect" even faster.