Endorphin's Floating Friend (abbreviated as EFF) is a first order defensive spell which floats a shield around the caster.

The shield will automatically protect against attacks and remain floating around the caster until it is knocked out of orbit.

 

The effectiveness in blocking attacks is determined by the weight of the shield, i.e. a large wall shield will be much harder to knock down than a small wooden shield. As this is the case, it is much harder to successfully float a heavy shield than a light one.

The ability to float a shield is determined by the caster's bonus in magic.methods.physical.binding and the shield weight. The ability to control a shield is determined by the caster's bonus in magic.spells.defensive and the shield weight. Insufficient skill to control a shield will mean that the shield will fail to block attacks, and ability to cast the spell on a given shield does not guarantee that the shield will block efficiently for the caster.

Check "Utilities -> EFF Shields" for a list of bonus requirements for each shield.