Aesthir Glider

A colorless evasive beater for decks that have no color to spare, built on a clean tradeoff: you get an efficient flying body, and in exchange it can never come back to play defense. Stripping away the ability to block is what prices the artifact down, removing the half of combat that would have made it a flexible role-player. What's left is a one-directional clock, an attacker that does nothing but attack, which is exactly the kind of single-mindedness a tempo or aggressive shell wants from a three-cost flier that demands no colored mana. It belongs to an early family of colorless artifact creatures that let any deck buy into a curve without warping its mana, the same niche that later artifact aggressors would refine. The body fills a specific gap: pressure in the air for a deck whose plan is to race rather than grind, where blocking was never the intention anyway.