Mossheart's Promise, , HarperCollins, Rebecca Mix,Children’s / Teenage fiction: Fantasy,Children’s / Teenage fiction and true stories, middle grade fantasy; fantasy; magic; lgbt kids books; lgbt; children's; grandma book; grandmother; grandparents; family; intergenerational tension; intergenerational relationships; fairies; terrarrium; fairy wings; insects; adventure; hero's journey; heroism; climate change; climate crisis; bravery; courage; environment; caring for the environment; queer fantasy; queer children's books; the ones we burn; found family; starred reviewbooks for 10 year old boys; books for 9 year old boys; books for 12 year old boys; books for 8 year old boys; books for 11 year old girls; books for 11 year old boys; books for 8 year olds; books for 12 year old girls; books for 8 year old girls; childrens books; books for 9 year old girls; tween books for girls ages 11 12 13 14; childrens books ages 8 9 10 11 12; grandpa; fae; parenting; mage; kids books ages 8 9 10; teaching; lgbtq; anxiety; fairy tales; drama; school; reference; series; emotions; friendship; misc; mythical creatures; ya fantasy; favorites; sci fi fantasy; genre fantasy; mg fantasy; middle school; sci fixed fantasy; fantasy scifi; fantasy high; childrens fantasy; juvenile fantasy; fantasy paranormal; battle of the books; lgbtqia; middle grade; childrens middle grade; age middle grade; everand; lgbtq plus; girl power; maybe; anticipated releases; j fic; most anticipated; starred review; tiktok; middlegrade; faeries; sff; books for 10 year old boys,, , United States, en-UShttps://www.harpercollins.commiddle grade fantasy; fantasy; magic; lgbt kids books; lgbt; children's; grandma book; grandmother; grandparents; family; intergenerational tension; intergenerational relationships; fairies; terrarrium; fairy wings; insects; adventure; hero's journey; heroism; climate change; climate crisis; bravery; courage; environment; caring for the environment; queer fantasy; queer children's books; the ones we burn; found family; starred reviewbooks for 10 year old boys; books for 9 year old boys; books for 12 year old boys; books for 8 year old boys; books for 11 year old girls; books for 11 year old boys; books for 8 year olds; books for 12 year old girls; books for 8 year old girls; childrens books; books for 9 year old girls; tween books for girls ages 11 12 13 14; childrens books ages 8 9 10 11 12; grandpa; fae; parenting; mage; kids books ages 8 9 10; teaching; lgbtq; anxiety; fairy tales; drama; school; reference; series; emotions; friendship; misc; mythical creatures; ya fantasy; favorites; sci fi fantasy; genre fantasy; mg fantasy; middle school; sci fixed fantasy; fantasy scifi; fantasy high; childrens fantasy; juvenile fantasy; fantasy paranormal; battle of the books; lgbtqia; middle grade; childrens middle grade; age middle grade; everand; lgbtq plus; girl power; maybe; anticipated releases; j fic; most anticipated; starred review; tiktok; middlegrade; faeries; sff; books for 10 year old boys, [BLURB],[CITY],,books, ebooks, biblet, Book2look