A fiend formed of Pyreflies drifting through the Farplane. It carries the opposing powers of lightning and water. It absorbs lightning, but can use water magic. Neat trick.Scan
The Jahi is an enemy in Final Fantasy X-2. For the point of the game it appears in, it is not particularly threatening. Excalibur is all that is needed to take it down, but if that is not an option, using strong physical classes or powerful spells such as the Level 3 elemental spells (except for Lightning, as it absorbs it). It is not very difficult at all.