5th Element

There are generally Four (4) agreed upon magical elements However the the 5th element varies from culture to culture and tradition to tradition, if it indeed has 5 or more elements, Bablan and Greek Traditions are only known to have the four (historically)
 * Water
 * Fire
 * Earth
 * Air

Spirit
Generally viewed as the spiritual energy within all things in Wicca and other Neo-Witchcraft traditions.

Metal
Mostly seen in Asian(?) traditions, possibly originating from the Chinese Wu Xing system that lists Wood (木 mù), Fire (火 huǒ), Earth (土 tǔ), Metal (金 jīn), and Water (水 shuǐ) as 'phases' all things go through.

Sky
Ancient Gaelic Traditions had the 5th Elements as Sky and is completly seperate from Air, leading some to believe it contextually translates better into modern minds as 'Heaven', though this may be a bastardized post-christianization concept.