This spell may be cast upon the Wizard himself or any single friendly independent character model within 12" of him - the spell can only be cast on a model with a Unit Strength of 1 (it won't work on a mounted model or a model riding in a chariot, for example).
If successfully cast, the model can make a normal flight move of up to 20". The model can fly out of close combat if desired, but cannot fly into close combat unless positioned so that it could do so by making a normal aerial charge (for example, it must not be engaged in combat already and must be able to see the target).