Muse Vessel

Hand disruption that doubles as a key ring: most discard spells take a card from an opponent and dump it where they might claw it back, but this one tucks the stolen card under itself and then, for a single mana, hands it to you to cast. The two-stage cost structure is doing the real work. The exile half is a tap ability gated to sorcery speed and asks three mana on top of the artifact's own four to set up, so the theft is deliberate and slow; the replay half is almost free, which inverts the usual penalty of hand attack. You are not just stripping a resource, you are converting it into your own. The catch that keeps it honest is that the replay clause grants no color-fixing: you pay the exiled card's printed cost as written, so a stolen spell you cannot afford in your own colors sits under the Vessel as a prize you stripped but cannot spend. Each activation reaches only one card, so against a stocked hand it is a slow drip rather than a Mind Twist, and a smart opponent empties their hand before you can pry anything loose. But left running across several turns it becomes a soft prison: every castable threat an opponent draws is a threat you might end up casting instead. It is an early example of the "steal and use" strain that later designs would make faster and more forgiving; here the engine is patient, gated, and entirely about whose turn it really is.