Shade said:I'm thinking outsider, rather than magical beast, solely because it reforms on its plane, thus indicating it being a part of its plane. Thoughts?
The spirit leopard's most deadly attack is its bite. On a natural to-hit roll of 18 or 19, the bite does double damage, and the opponent will be held fast in the mouth. The spirit leopard automatically does normal bite damage to the held victim every round thereafter. On a natural to-hit roll of 20, all of the above occurs, and the victim is drained of one level of experience in the first round of biting.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.