Kinjalli's Sunwing

Tempo as a static ability. Most ways to slow an opponent down operate one creature at a time: a tapper aimed at the threat that matters, a removal spell, a bounce effect that resets a single body. This one converts every creature the opposition plays into a blocker that arrives a beat too late, levying a permanent tax that no individual body can pay its way out of. The mechanic is narrow but relentless: a creature that enters tapped cannot block the turn it lands, so a fresh chump can't wall the swing it was cast to answer, and anything relying on haste to swing the turn it resolves is quietly neutered as well. The cost of the design is its passivity. It does nothing to creatures already on the battlefield, so it rewards deploying it ahead of the curve rather than reacting; play it into a developed board and the tax applies only to the next thing they cast. The asymmetry (creatures your opponents control, never your own) is where it parts ways with the symmetric land-tappers and Kismet-style effects of earlier eras, which slowed everyone equally. Here the friction lands entirely across the table, and a 2/3 flyer that folds the tax into the board state is doing two jobs at once: pressuring life totals in the air while stripping the defensive value out of every creature drawn into the matchup.