Drive

Drive (ドライブ, Doraibu): Drive is a type of Magic-amplification technique used by Third Generation Dragon Slayers that brings out the true power of their capabilities as a user of Dragon Slayer Magic, excluding the power boost granted by Dragon Force, yet, at the same time, seemingly enhancing the user's physical prowess to a degree, particularly the user's speed.

Description
The Drive spell is exclusive to Third-Generation Dragon Slayers; and as the name indicates, it is activated via some kind of mechanism; in this case, Drive is initiated by harnessing the power of the Dragon Slayer Lacrima which is embedded within the user's body. Upon command, the Lacrima begins to distribute the Dragon Slayer Magic Particles stored within the crystalline orb at a swifter pace, accelerating the output and flow of magic from the Lacrima to the user's body in order to enhance all of their fortes, increasing the strength, speed, and potential that the user possesses tenfold, allowing them to take on even foes much more powerful than themselves; entering a state of enhanced awareness and peak physical ability as their element cloaks around them. While in this state, the user demonstrates heightened reflexes and extremely quick information processing, and it amplifies the powers of their Dragon Slayer Magic without exhausting themselves. This state grants the user the ability to perform new spells; as well as making their pre-existing spells far more powerful, with various users only employing several skills only while in Drive. The Drive spell harnesses "the power that kills Dragons"; at least according to the words of the first users, the Sabertooth Twin Dragons; whom are actually noted to be rather weak compared to their First-Generation counterparts. However, in the hands of an actually capable Dragon Slayer, the Drive spell would be capable of allowing the user to dish out some serious damage. However, the uprise of magical energy could easily obliterate the user or severely damage their body, if harnessed for too long. In the case of a Dual Element Dragon Slayer, whom are modified Third Generation Dragon Slayers, the Lacrima embedded within their body would only enhance their natural element (aka the one taught by the dragon).

Trivia

 * Drive was featured in canon, but User:Perchan expanded it to make more sense, allowing users to use Drive easier.