Tocatli Honor Guard

A hatebear built entirely around one verb that the rest of the game leans on harder every year: entering. The body is incidental; the function is a static lockdown of enters-the-battlefield triggers across both players, which is a strange place to put white's hate because it punishes the engine that most modern value decks are made of. Blink loops, fetch-and-flicker toolboxes, token-and-trigger shells, the whole apparatus of getting creatures onto the battlefield specifically to cash a trigger goes inert while this sits in play. The precision is what makes it elegant: it touches only triggers that fire from a creature entering, so combat, activated abilities, and your opponent's removal still work normally, and it does not stop the creatures themselves, only the value they were supposed to generate. That symmetry is the catch, since it shuts off your own enter-triggers too, which is why it tends to live in decks that simply do not care about them. It sits in a lineage of asymmetric-by-deckbuilding hatebears like Hushbringer, which covers leave-the-battlefield triggers as well, where the question is never the rate but whether your gameplan is clean enough to give nothing up in exchange for switching off someone else's whole machine.