A Superhero Family Finale

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Across
  1. 2. heart
  2. 3. element
  3. 8. planet
  4. 10. thor
  5. 11. iron
  6. 12. anagram
Down
  1. 1. chain
  2. 4. thea
  3. 5. galaxy
  4. 6. amazons
  5. 7. becomes her
  6. 9. ouch