Bottomless Pit

A symmetrical discard engine that costs nothing to maintain, which is the design tell that black is supposed to wear it better than its opponents. The random clause is the load-bearing piece: this is not the controlled hand-attack of a Duress or a Mind Twist, where you pick the card that hurts most, but a blind tax that strips a card from every hand every turn, your own included. That symmetry is the constraint that keeps a no-mana lock honest, and the deck built to abuse it does so by emptying its own hand first: dump everything onto the board, then let the random discard chew through the opponent's now-irrelevant draws while you have nothing left to lose. It punishes the slow, hand-hoarding decks that want to sit on answers and react, and it rewards committing your resources to the battlefield where the upkeep trigger cannot reach them. The friction is real and felt on both sides of the table, which is the point: black's design philosophy here is that you accept your own pain because you have already arranged to feel less of it. The same logic animates a long line of symmetrical black attrition pieces, but this one is among the purest expressions of it, a flat enchantment that asks only that you build to be the player holding fewer cards when the discard resolves.