Abstruse Interference
Every soft counter builds in the same concession: the opponent can pay the tax, the spell resolves, and you have spent your turn on a tempo nudge and nothing else. This one blunts that concession by handing you an Eldrazi Scion regardless of whether the counter sticks. It was never really priced as a counterspell. The tax is one mana, trivially payable, and against any deck holding a spare mana the counter half is a formality. The body is the payoff: a 1/1 that either sacrifices for a colorless mana or feeds the cast-triggers of an Eldrazi shell built to eat small colorless creatures. Devoid staples the card into that shell, making it read as colorless to anything that cares. Structurally it is a ramp-and-pressure piece with an optional tax attached, and the token is what earns the card its place: the spell may resolve, but the Scion stays behind to buckle into the engine that wanted the mana in the first place. The lone constraint is that there must be a spell on the stack to target, so with an empty stack the card is dead in hand. That target need not be the opponent's, though the math on pointing it at your own spell is grim: three mana to cast this plus one for the self-tax, all to produce a token that sacrifices for a single colorless. As a mana source that is a heavy net loss, an emergency line rather than a plan.
