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'Crisis on Infinite Earths': Harbinger Enlists the Legends of Tomorrow in New Teaser for Arrowverse Crossover

When you’re facing the destruction of all universes, it’s all hands on deck: In TVLine’s exclusive promo for the Arrowverse’s epic “Crisis on Infinite Earths” crossover, Lyla Michaels, aka Harbinger, calls upon READ MORE & WATCH VIDEO