Moreover, agboot28.itm (gnomish boots) only provide immunity to the graphical effects of entangle, grease and web. It should probably be changed to provide immunity to those spells.
But if it was intended to provide immunity to all spells with those graphical effects, one first would have to search for all spells causing those effects and then dynamically (=installation dependent) patch agboot28.itm to grant immunity to those.
Another option to spare yourself the hassle, would be to simply let them grant free action instead.
Edited by 10th, 16 June 2013 - 11:32 AM.