Desolation Twin

Ten mana for two ten-power bodies is the design statement, and the wrinkle is where the second one comes from: the cast trigger fires on announcement, not resolution. Spend the ten and the token Eldrazi exists before the actual spell ever clears the stack, which means a counterspell aimed at this card kills the original but leaves the 10/10 it already produced sitting on the battlefield. That separation is the whole point of pricing a finisher this aggressively at the top end. Answer the spell and you have not answered the mana; the opponent traded their interaction for half the payoff and still faces a fresh ten-power threat. The colorless ramp shells of this era were not trying to curve out; they were stockpiling toward a single overwhelming turn, and a haymaker that guarantees at least one uncounterable body is exactly what that kind of deck wants. The contrast with the giant Eldrazi titans of the same lineage is instructive: those cards bought protection through cast triggers that disrupted the opponent, exiling permanents or stripping the library, while this one buys protection through redundancy. It is the bluntest expression of the "spend everything, end the game" plan: no evasion, no ability beyond the trigger, just a promise that the mana invested lands something on the board that no single answer can fully take back.