Like most Magic: The Gathering cards, the value of Quietus Spike 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 (Shards of Alara)
You also don't really care about the nibble damage or the unblockable dork as other lists will do
Shuffle up a pair of Foundations Jumpstart 2025 boosters for some casual play that hits on a number of levels, with valuable anime collector cards, intriguing legendaries, and some cards you flat out, can't get anywhere else
Most of the upgrades to the deck involve removing subthemes that contribute little to the song strategy, and replace them with more efficient cards
Reckless Wurm is a color-shifted version of the same card, really only relevant in Anje Falkenrath decks