Dryad

The Dryad is an NPC vendor that will spawn once the following criteria have been met:


 * There is an empty House.
 * The Eye of Cthulhu, Eater of Worlds, Brain of Cthulhu or Skeletron has been defeated.

In addition to selling items, the Dryad can also report the percentages of Corruption/Crimson vs. Hallow that exist in the current world.

When enemies are nearby, the Dryad will periodically grant the Dryad's Blessing buff to players in the vicinity and displays a leaf barrier effect. The buff grants +8 defense, increased health regeneration, and gives the player contact damage. Enemies within the leaf barrier and with clear sight to the Dryad will take 1 point of damage per second, (more damage per second if you have defeated more bosses and x1.5 during Expert Mode).

World status
The Dryad's reports on Corruption/Crimson/Hallow coverage are accompanied by a status message. She sees Hallow as "good", and Corruption or Crimson "bad". The Dryad makes the distinction between Corruption and Crimson if they are present in the same world, and will list their percentages separately, though they both contribute to the overall "bad" total in her final report.

Tips

 * Dryads Blessing circle begins roughly 20 blocks from the Dryad, expands to a roughly 40 block radius, and briefly expanding to a 60 block radius before ending.
 * For players creating housing for the Truffle, it would be beneficial to temporarily house the Dryad in or near a Glowing Mushroom biome where she will sell Mushroom Seeds.
 * It is not necessary to build a house, a Queen Statue can be used to teleport her to a Glowing Mushroom biome.
 * Another way on to bring the Dryad to a Glowing Mushroom biome is to use Boulders or Land Mines to kill the Dryad and invalidate all open housing except in the desired biome.
 * Players can obtain items from both evils without using a different world by buying Corrupt or Crimson Seeds and making an artificial biome.

Names
The Dryad may have any of the following names:

Interaction quotes
After defeating Old One's Army:
 * Tier 1:
 * "" [sic]
 * Tier 2:

When Merchant is present: When Arms Dealer is present: When Truffle is present: Before Skeletron is defeated: In a Corrupt world:
 * Before defeating the Eater of Worlds
 * Before defeating the Eater of Worlds

In a Crimson world:
 * Before defeating the Brain of Cthulhu:
 * Before defeating the Brain of Cthulhu:

Only during a Blood Moon: When asking for the status Once the world is completely pure: During a party:
 * "[Name of world] is [hallow percentage]% hallow and [crimson/corruption percentage]% [crimson/corruption]. [Dryad's comment, see above]." (She will say Crimson or Corruption depending on which one there is, however, if both are present through an artificial biome, she will list both Crimson and Corruption percentages. She will add in the Hallow's percentage in Hardmode.)

During Rain:


 * "When it rains, many kind of fish acquire some mystical properties." [sic]


 * "The water from the sky is a way for nature to wash away the mud in our streams."

During a Thunderstorm:


 * "It is unwise to traverse openly beneath the flashing dangers from above."


 * "Our mother is angry, and wishes to burn away the filth by raining destructive power on our treetops."

When in a :


 * "I can handle the corruption, but the vile air of death in this location wilts the flower in my hair."


 * "This place... I can hear the cry of nature at those who've fallen here."

Happiness quotes
When homeless:


 * "All of nature may be my home, but a house would treat me well."

When far from home:


 * "A flower doesn't grow very well so far away from its roots!"

When in a sparse area:


 * "Solitude is sometimes good - there's room to grow and to breathe."

When overcrowded:


 * "Is this area becoming rather dense, or is it just me? I dislike the feeling..."


 * "So many others crammed into one spot? The grass is doomed, I hate it!"

When in the Jungle:


 * "I kissed a tree in the Jungle and I liked it."

When in the Desert:


 * "I rather dislike how the Desert is so devoid of life."

When in an Evil Biome or the Dungeon:


 * "I am severely offended by my surroundings - the Corruption/Crimson/Dungeon is my mortal enemy!"

When near the Witch Doctor:


 * "I like that [Name of Witch Doctor] the Witch Doctor resonates with every fiber of my being!"

When near the Truffle:


 * "I like that [Name of Truffle] the Truffle resonates with every fiber of my being!"

When near the Angler:


 * "I don’t like that [Name of Angler] the Angler has no respect for other beings."

When near the Golfer:


 * "I hate [Name of Golfer] the Golfer’s destructive habits towards nature!"

When neutral:


 * "All is peaceful, don't mess it up."

Trivia

 * A is a nature spirit from Greek mythology, generally depicted as a beautiful young woman. Fittingly, many of the Dryad's possible names take inspiration from either classical literature (e.g., , , ) or female celebrities.
 * This might be the reason that the Arms Dealer appears to flirt with her as shown in one of his quotes, but she states in one of her quotes that she wishes the Arms Dealer would stop pestering her.
 * In the same quote she reveals that she is 500 years old.
 * The Dryad is depicted in a Painting called Dryadisque, which itself is a parody of La Grande Odalisque.
 * Her quote calling the Truffle a "fun guy" plays on the "".
 * One of the Dryad's quotes about the player's safety says "Terraria needs you," instead of "[World Name] needs you." This is an oddity among the other quotes.
 * Calista the Dryad is featured in the Terraria Comic Book from DC Comics.
 * The Dryad also appears in Dungeon Defenders II.
 * The Dryad's quote referencing her time in Etheria and her use of the corruption against the Old One's Army is a reference to her ability in Dungeon Defenders 2 where she can become a corrupted version of herself to do extra damage.
 * One of The Dryad's names (Nissa) comes from the planeswalker Nissa Revane from the trading card game,.
 * Despite this, if the Dryad is killed another Dryad will still arrive, most likely with a different name.
 * One of the Dryad's names, Celestia, is a reference to the TV show My Little Pony: Friendship is Magic, which has a princess of the same name.
 * When housed in the Jungle, one of her quotes "I kissed a tree in the Jungle and I liked it" is a reference to the Katy Perry song "I Kissed a Girl".
 * According to Redigit, the Dryad "Isn't actually wearing anything" and "the vines are a part of her body".
 * According to Redigit, the Dryad "Isn't actually wearing anything" and "the vines are a part of her body".