Specter's Shriek

Targeted discard that reveals the whole hand before you choose is the premium version of the effect: no coin flip, no guessing which threat matters, just full information and a clean exile. What separates this from the usual Thoughtseize-style hand attack is the exile clause on both ends. The card you take from the opponent does not go to their graveyard; it leaves the game entirely, so an opponent leaning on flashback, escape, or reanimation loses the piece outright instead of banking it for a second use. Against a hand you can already read, that permanence turns a one-mana spell into a scalpel for pulling the single card a combo or control deck cannot function without. The balancing wrinkle is keyed to the color of what you take, not to your own deck. Strip a black card and the transaction is free. Take anything nonblack (a white removal spell, a blue counter, any off-color threat) and the same resolution that exiles their card also exiles one from your own hand to pay for the intrusion. That cost is written into the spell's effect, not a separate trigger, and it reads the color of the card you exiled rather than the makeup of your deck: the price lands the same whether you are mono-black or five colors. In practice the spell is unconditional only when the thing worth taking happens to be black, and taxes you every other time. Note your side of the ledger is exile too, not discard, so there is no madness or graveyard payoff hiding in the drawback: it is a straight subtraction from both hands.