Item: wraith? =O

Answer Lore:Priests from different hofs of the Egjora religion travel to the glen to procure water, placed it into vials blessed by themselves, the travel to a garden said to house a tree grown from a seed of the world tree, and water all the plants and the tree within, blood from sacrificed animals is also used.

Flora: They're poisonous and burrow into your skin to root (assuming one's skin is a warm and wet surface.)

Location: Zujiuchu Mountains, the cradle of Zet'ski is also made out of black granite.

Deity: Reyansh, the Trickster god.

Children: 3

Hurray! Thanks for the rewards! Can't believe I correctly guessed Brittlez kids count.
Anyway, let's put my google-fu back in action:

Flora: You can find drops of rose hip (roses) and snowbelle in Zet'ski.

Lore: The island was once called Srendnyimor, a lifeless wastelands cursed by the mad god Verya.

Deity: Mendean - the Lord of Chaos who Walks in Dreams

Dalanesca:
Before: She Who Maintains Order and Balance. Lost the Darkness Sphere title was: The Harbinger of Darkness [Titles Changed with Time]
Now: The Reaper of Souls; The Siren [Death/Desire]
Therefore: The domains of Order, Balance and Darkness were once hers, to be lost when the tragedies of Marth's disappearance and the loss of her unborn child struck in quick succession. 

You know, other people on this forum, feel free to participate. Girshu doesn't need to hog all the loot. And Shiloh, if it's a bother to come up with new trivia questions every week, feel free to give it a longer time-limit if it's just me.

Lore: The desert was created when the God Sardon Tiger-Iron sucked away all the cold and replaced it with a searing heat. This in an angry response to a not-appeasing year of sacrifices and offerings of the local tribes, who left the Tusara plains as the nature and rain vanished.

Deity: There's three possible candidates, however Tsaer would be my bet to have held the actual domain of strength before Lokir. If we're talking chronologically it's probably Rhea, for she's the only one who actually has an account on New Revaliir. The other two are from the ancient site of time yonder, long since abandoned and forgotten.

Nyasia- Laborer of Love and Stronghold of Strength
Rhea - Goddess Who Whispers Love and Dangles Strength
Tsaer - God of Life and Strength

Location: I wouldn't know, actually. I scoured the wiki for an answer but couldn't find anything about non-ocean mermaids.