Siren Song Lyre

A repeatable tapper bolted onto a body, which is a stranger proposition than it first reads as. Most tap effects in the game come stapled to a creature already (the Master Decoy lineage, the Icy Manipulator school of artifact lockdown), where the cost of the ability and the cost of the chassis are bundled. Here the ability floats free: equip it to whatever survives, and that creature gains the power to keep an attacker or blocker home each turn for two mana. The detuning is in the math. Two to equip, two to activate, and the tap and the equip both eat into the same mana you would rather spend developing, so the lock it promises is never as tight as a flat permanent like Icy Manipulator that taps for less and never asks for a host. What it offers instead is durability through redundancy: kill the equipped creature and the engine survives on the battlefield, ready to be moved to the next body for two mana. That resilience is the whole pitch, and it is a quiet one. The card occupies the same design niche as other "give a creature a useful activated ability" Equipment, where the question is always whether a removable, re-attachable source of an effect is worth more than the effect printed directly on a creature you would have played anyway.