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Mordenkainen's celerity was a spell that improved the efficacy and duration of other velocity-altering spells.[1]


If Mordenkainen's celerity was cast by the same person moments before a spell such as feather fall, fly, haste, jump, levitate, or spider climb, the magical speed granted by that spell and its duration increased by a factor of 25%. In the case of feather fall, the falling speed could also be reduced by the same amount if the caster so desired. Additionally, a casting of haste following the spell affected more creatures.[1]

The spell also improved the caster's defense against speed-reducing spells such as hold person, slow, and web, as well as magically induced paralysis.[1]


The spell required verbal, somatic, and material components. The material required was a small container filled with either centipede or millipede legs.[1]


By the mid‒14th century DR, the spell was well-known and relatively common across Faerûn,[2] but rare in Zakhara, where it was known simply as celerity.[note 1][3]



  1. Canon material does not provide dating for the Al-Qadim campaign setting. For the purposes of this wiki only, the current date for Al-Qadim products is assumed to be 1367 DR.