The Cicada's Daggers are two blades capable of absorbing the life force of his victims to be transferred to resurrect the dead, they were weapons of choice of the villain known as Cicada.
The Cicada daggers were meta-techs created after the Flash and XS destroyed the falling S.T.A.R. Labs satellite, which was imbued with dark matter. The dagger hit Orlin Dwyer during the enlightenment. He got attached to the dagger and used it to get revenge on all metahumans for what happened to his niece Grace Gibbons and her parents. As the dagger glows to produce red electricity, it can generate powerful force fields and also negate the powers of other metahumans created by dark matter. Eventually, Team Flash managed to send the dagger to Mirrorverse using the Mirror Gun, but it was revealed that the dagger was part of the Reverse Flash plan to break free.
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