Telekinetic Sliver

Lockdown wears a Sliver costume here. The design conceit is that the tap ability is not bolted onto this one body but written into the hive itself: "All Slivers" gain it, which turns a board of identical 2/2s into a fleet of Icy Manipulator effects. One Sliver taps a blocker; five of them tap an opponent's lands during upkeep, their attackers before combat, their creatures before those can swing. Note the symmetry, though: because the ability sits on all Slivers regardless of controller, an opponent running their own hive gets the same hold-down toolbox off your card, and any Sliver in a mirror can be the one doing the tapping. The clause that keeps the engine from running away is the tap symbol on each activation: every lock spends a creature's tap for the turn, so each held permanent costs you an attacker, and the Sliver that just pinned a land cannot also swing. It inherits the tribe's structural fragility too, where a single sweeper unwinds the whole apparatus at once. What lifts it past a one-creature soft-lock is the additive math: each new Sliver added does not just add a body, it adds another permanent's worth of tapping, and a hive deck's capacity to flood the board is exactly what makes that scaling matter.