If there are no legal target for a challenge, or if a character without Reckless cant quest for any reason, they will not do anything
This will find a home in plenty of decks, especially given artifacts are usually a big part of storm-style packages anyway
This passive accrual means that Locations will be a juicy target of opponents challenges, and they only need to whittle down the Willpower amount listed on the right side of the card to banish them
And 10, which is wildly beloved
By the time you have five mana to cast it, you will likely need more cards in hand
Also, its original Apocalypse printing has some sick Magic art featuring Crovax, a Mirrorwood Treefolk, and a bunch of Kavu creatures duking it out