|Primary caster||Nanoha Takamachi|
|Japanese name||アクティブガード |
|First app.||StrikerS (ep.1)|
Active Guard (アクティブガード Akutibu Gādo) is a defensive spell to generate a low-speed blast to decelerate the target and assume the contact gently. As it is not generating a barrier like Circle Protection, for simplicity it is sub-categorized under other defensive spells.
In StrikerS (ep.1), Nanoha Takamachi casts this spell together with Holding Net to save Subaru Nakajima and Teana Lanster from crashing into a wall, as they have accelerated too much to finish their mage exam within the time limit. Raising Heart Exelion has taken into account the weight of them, measured their speed and computed the appropriate power to reduce their speed to zero.