Inquisition of Kozilek

The mana-value clamp is the entire design. Thoughtseize takes anything and charges two life; this one charges nothing but agrees to leave the expensive cards alone. That trade reshapes what a turn-one discard spell is for: it is no longer a way to strip a finisher, it is a way to disrupt the cheap connective tissue of a hand, the cantrips and removal and combo pieces that fit under three. Against decks built on three-and-under spells it functions as a painless Thoughtseize; against the ramp and control hands stacked with five-mana payoffs it whiffs entirely, sometimes staring at a hand it cannot legally touch. The card is a metagame read in spell form, strongest exactly when the format's best decks live at the bottom of the curve and dead weight when they don't. The reveal clause does work people overlook, too: seeing the full hand on turn one is information that pays out on every later turn, even the ones where the discard itself missed. It sits in a lineage of black's hand-attack spells that have always paid for precision with some restriction: a life cost, a targeting limit, a mana-value gate. This one picked the gate, and that single line has kept it relevant across formats for over a decade without ever needing a rate adjustment.