Effects: When worn the ring will let a spell lock in place on the subject for its duration or until the ring is removed. This only lets the effect that was intended to function at the time the spell was cast. For example alter self spell you cast it on a willing subject with the ring and at the time of casting you want an elf to pass for human. This will lock that said effect in place but the subject has no other control over any other part of the spell as it was locked into place at the time of casting. So no changing to look like something else or using any other aspect of said spell what was not part of the previous casting. This will only function as to replace the concentration of an effect so no roll is required to maintain its effect of the spell. If the spell does not have concentration duration and only affects spell that you cast on the subject wearing the ring. (For example: Otto’s irresistible Dance would not work for this effect due to the casting is not on you but another subject unless they said subject was wearing the ring. Only one effect can be on the ring at a time and only removed if the ring is or duration has run its course. If wearing the ring that is not locking a spell effect in place and a spell is cast to effect subject and is of the type the ring can lock then the subject can choose to let it affect him or reject it by gaining an advantage on the save to resist it) then this ring will not function for that spell effect. These rings are made to affect only Low 1st to 3rd, Middle 4th to 6th and High 7th to 9th spell effects.