It wont learn it on its own and I don't think theres a tm for it. I want it to learn a special dark move since its special attack is high.
You have to get TM Dark Pulse from D/P/PT or HG/SS and teach it to either Ekans, Arbok, Gyarados, or Seviper and transfer it to B/W. Then you breed them with Hydreigon and you get a Deino with Dark Pulse. Hope this helps...
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