Mistvein Borderpost
Bounce a basic you control back to your hand, add a single generic mana, and a three-mana rock arrives for what amounts to one mana and a turn of stumbling. That is the bargain at the heart of this fixer, and the math only flatters greedy multicolor decks: the returned land is not gone, just a drop you can replay later, so the tempo hit is real but recoverable. The enters-tapped clause is the tax that keeps the mana-positive cast from being a free ritual; you do not get to bounce a land, deploy the rock, and tap it for color in the same turn. That sequencing restriction is what separates this from an outright ramp spell. It belongs to a small family of artifact mana sources that reward having basics in play to recycle rather than punishing missed land drops, and the two colors it taps for mean it earns its slot only in decks that genuinely need both blue and black on schedule. Outside that specific color demand it is a slow, unremarkable tapland with extra steps; inside it, the land-recycling trick is the entire case for running it over a plain dual-producing land that asks nothing of your hand.

