Skittering Invasion

Seven mana for five bodies that exist mostly to die: this is ramp wearing creatures as a costume. Each Eldrazi Spawn token converts directly back into a single colorless mana, so cracking the whole brood returns five of the seven you spent, a net of negative two but a refund big enough to keep your hand moving. The point was never tempo (you have already burned your turn), but structure: five sacrifice fodder that double as a mana reservoir for the next cast. That dual nature is what gives Eldrazi Spawn their reputation across decks built to abuse them. They feed sacrifice outlets, they fuel aristocrat triggers, they ramp into something enormous, and because the token leaves the battlefield to make its mana, it satisfies anything that cares about creatures dying. A single cast hands you five separate death triggers on a stick, five chump blockers, and five colorless you can bank at instant speed. The clumsy seven-mana front end buys all that flexibility; nobody casts this on rate, they cast it because they have somewhere for five disposable bodies to go. It produces the most Spawn of any single card in its line, and the engine pieces around it (free sacrifice outlets, token doublers, payoffs for creatures entering or leaving) are what turn a slow sorcery into a sudden flood of resources convertible into mana, damage, or graveyard fuel on demand.