Eldrazi Aggressor

Conditional haste is the wrinkle here, and it tells you exactly what board this drone was bred for. The 2/3 body wants to attack the turn it lands, but the card refuses to grant itself that speed: it borrows haste only when another colorless creature is already in play. That clause does double duty as reward and signpost. It pushes you toward a board built on Eldrazi and other colorless bodies rather than a generic red curve, and it punishes a hand that opens on this card alone. Note the "another" doing the load-bearing work: being colorless itself is not enough, so the first copy you cast comes down slow, waiting on a prior drop to turn it on. That asymmetry is the point. Any earlier colorless creature switches this one to haste the moment it resolves, and once one sits on the battlefield the next copy you cast arms itself off it. Devoid is why any of this coheres. Cast for , this would otherwise be a red creature; the keyword strips that color and folds the card into the same colorless pool it depends on, so every copy both counts toward the condition and feeds the next. The design reads as deliberate tribal glue from a stretch when colorlessness was a build-around theme in its own right, asking you to commit to a critical mass of devoid creatures before the aggression pays. The conditional is the whole argument for why a modest 2/3 sits where it does on the curve.