Costume/Superhero Day

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Across
  1. 2. Fake it say?
  2. 4. Perfect place to find the night sky working?
  3. 5. Card the gets you every time?
  4. 10. Writes
  5. 11. Big boat of legends
Down
  1. 1. Aching after a good workout(say)?
  2. 3. The weakest hero?
  3. 6. Makes a Mistake
  4. 7. The bane of Superman
  5. 8. Affimartive answer
  6. 9. Surprise statement on a safari?