Moonsnare Prototype

Most one-mana rocks add a body whose only job is to sit there and produce mana. This one produces nothing by itself: its ability taps the artifacts and creatures you already have out, converting a wide board or a pile of unrelated permanents into a repeatable battery. That makes it a parasite on whatever else you have deployed rather than a standalone accelerant, and it plays especially well with untappers or things that already want to be tapped. The two halves are mutually exclusive by construction, and that constraint is the whole point. Channel is not an escape hatch for a stale rock: it requires discarding the card from hand, so you can never ramp with it first and then cash it in. From the moment you draw it, the card forks. Resolve it as a mana producer and commit to the accelerant plan, or hold it and pay five to tuck any nonland permanent onto the top or bottom of its owner's library. That tuck dodges regeneration, death triggers, and indestructibility by never letting the target die, but the owner picks top or bottom, so against a live opponent it reads as a tempo tax rather than a clean answer. One card, two roles, and the deckbuilder who draws it decides which before it ever touches the battlefield.