Death Bringer Puzzle

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Across
  1. 2. Goddess of decay
  2. 3. Type of dragon
  3. 6. Our plane
  4. 7. Good creatures
  5. 9. School of magic associated with death
  6. 14. Simple necromancy spell
  7. 17. Important healing spell
  8. 18. Your favorite dessert
  9. 19. Undead wizard
  10. 20. Plane of fog
  11. 21. Undead ball of light
Down
  1. 1. Small plane
  2. 4. The code you need
  3. 5. Some creatures are more powerful here
  4. 8. Plane where elves originated
  5. 10. Symbol of death
  6. 11. Type of ooze
  7. 12. How we travel across planes
  8. 13. Plane of angels
  9. 15. To exit the library
  10. 16. A sorrowful undead creature
  11. 17. Ethereal undead