Sky Dragon Slayer Magic (Darknesslover5000)

 Sky Dragon Slayer (天の滅竜魔法 Ten no Metsuryū Mahō) is a Caster Magic, Lost Magic and a type of Dragon Slayer magic used by Wendy Marvell and Karen Nagareboshi.

Abilities
This Magic allows the user to incorporate the element of wind into their body and also allows them to consume external sources of their element to restore their body to a healthy state which means that their Magic works well in clean environments.

Unlike other Dragon Slayers, Magic Sky Dragon Slayer is more directed not to attack, but the healing (also fevers and painkiller) and support in the fight (to increase ally's attack power or increase his/her speed).

However, Wendy has proven (at the suggestion Jellal) that in her too is, so characteristic for the Dragons, the potential to cause extreme damage. She managed to learn by herself two offensive attacks (both are her variations of Natsu's attacks). Unlike Wendy, Karen focuses more upon offense than healing.

What is interesting, how that element it surrounds her, the possibility of regeneration of the magic seems to be unlimited (as shown in the fight against Faust, when he was the only one was able to use three times the Sky Dragon's Roar).

Limits
Like all Dragon Slayers, the user can't renew their magic source with magic, which they produce. In the Sky Dragon Slayer's case it is more important, because (even though it may cast a spell to help each other as Vernier) they can't be healed from the wounds by themself. Moreover, the user's magic is based on the air surrounding them, is very weakened in a contaminated environment. As the treatment requires a very large expenditure of magical energy, the user can use it in very limited quantities.