Blu should get this as a quested spell, at level 99. Upon completion of the quest you learn the spell. It can also be J.A. Mimic allows you to store one spell indefinably until you wish to learn another one, and to use that spell between those times. No zone limits, KO Limits or logout limits. Timers and all that can be worked out by you or SE. This spell has no animation, upon being cast, (as i know the technical problem with that), and is instant cast time. It works (store up wise) along the lines of sublimation. Blu would need to be careful with it as such, to not overwrite desired spell.