Isolation at Orthanc

Bounce buys a turn; this buys two, and that single extra cycle of separation is what the four-mana price tag pays for. Sending a threat to the top of a library hands its owner a free redraw next turn, which is why most tempo answers of this shape settle at one or two mana and accept the card coming right back. Burying it second from the top instead means the creature does not resurface until the turn after next: the owner still draws whatever was already waiting on top, but the tucked threat sits underneath, unreachable for one more rotation. Against a reanimation target or a commander you cannot afford to see again soon, that lag is the pitch. It answers tokens permanently, since a token ceases to exist the instant it leaves the battlefield and never reaches the library at all. The design is a calibration of the classic top-of-library tuck: cheap versions of that effect were pure card disadvantage, so the cost here reflects an answer that sits nearer hard removal than tempo. The obvious counters are structural rather than incidental. A shuffle scatters the buried card back into the deck and erases the plan; a threat that leaves no permanent behind gives it nothing to grab. But as a way to strand one recurring problem without returning it on schedule, the second-from-top clause does precisely the work its cost is buying.