Boost dagger is a lightning fast attack that lets you pull off three quick strikes on a targeted enemy. When paired with Zypher this skill can pull off decent damage due to high critical rate. Also its low cost of mana and fast reload time make it the choice for spamming attacks. Although not as powerful as dusk Slashing and Heart blast, it is a good skill to have until your later AOE (area of effect) due to such fast execution.