Devour Intellect

Black's cheapest hand disruption has always come with a caveat: at one mana you get a discard, but you rarely get to choose which card leaves. Coercion pays two for the privilege of picking; Thoughtseize pays with life for the surgical version. This design splits the difference by tying the upgrade to Treasure. Cast it on its own and the opponent discards a card of their choosing, which means they feed you the least painful loss they can afford; spend Treasure mana instead and it flips into a reveal-and-pick, letting you excise the specific nonland card you fear. That conditional is the whole point, and where the reward lands is what makes it clever: Treasure tokens accumulate in exactly the grindy midrange and ramp shells that also want disruption, so the card rewards you for holding a token until the turn you need to reach past their chaff and pull the answer or the bomb. The rate never moves; a single black mana buys the spell either way. What changes is the quality of the discard, from a concession the opponent gets to control to one you dictate. Early, it is a filler stripper that trades into whatever they least mind losing. Once the artifacts pile up, it quietly becomes hand-reading interaction. The gap between the mode they choose and the mode you choose is the entire design.