Entrancing Lyre

The lock is in the second sentence, and it hides in plain sight. Most tappers untap on your next turn and give the target back; this one doesn't have to untap at all, and the creature it pins stays pinned for exactly as long as the artifact remains tapped. Pay X once and that creature is out of the game indefinitely, with the size of the threat you can neutralize scaling to whatever mana you can spare. That is a Pacifism you can retarget, an Icy Manipulator that keeps the lock instead of resetting it, all built onto an artifact chassis that costs nothing in colored commitment and slots into any deck regardless of what it's playing. The catch is the tempo: every creature you keep locked is an untap step you decline, so the artifact is only ever holding one thing at a time, and freeing it to grab a new target releases the old one. That single-lock ceiling is the honest tax on an otherwise open-ended effect. It rewards patience over reach, wanting to shut off the one creature that matters (the enemy commander, the combo piece, the lone attacker) rather than sweep a board. The activated cost is repeatable and instant-speed, so it can answer a creature the turn it lands and then simply hold it there while the game moves on around it.