Replace the .unity3D files in "Pillars of Eternity\PillarsOfEternity_Data\assetbundles\prefabs\objectbundle" with the modded files.

This optional file is identical to the main file, with the exception being that all the Cipher's spells now have a casting time of "Fast", meaning that Ciphers won't need to "charge" their spells, but will cast them as soon as their recovery allows.