Like most Magic: The Gathering cards, the value of Mirkwood Spider depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (The Lord of the Rings: Tales of Middle-earth)
Menace is great, though Im unsure whether its more at home with other dinos or artifacts
Either way, its useful early on and it scales, so it should be excellent just like Final Flourish was
Angel decks also have some of the best individual creatures out there, like Avacyn, Angel of Hope and Archangel of Thune
Today, Nerdist is happy to exclusively reveal one of Disney Lorcana: Into the Inklands Enchanted cards
I cant say much more about this other than its highly playable at all levels of play