Ballista Charger

The attack trigger is what pulls this out of generic-beater territory. One damage to any target every time it swings is a slow but recurring clock: it clears a blocker before damage, chips a planeswalker, or finishes a creature your other attackers already softened, and it happens whether or not the Vehicle connects. That recurring point of reach, stapled to a 6/6 big enough to attack profitably into most ground stalls, is the whole reason it exists; a vanilla body that size could not do the job. Crew 3 is the honest price. Animating the Vehicle means tapping three power worth of creatures, and those creatures cannot then attack, so the crew is a conversion rather than an addition: you are trading the offense of a smaller body or two for the bigger body's swing and its ping. That math favors a board where you have spare power lying around (mana dorks, utility creatures that have already done their work) more than one where every creature wants to be in combat itself. Left uncrewed it is inert on defense but dodges sorcery-speed removal aimed at creatures, which makes it a resilient threat to leave on the table. Built for a midrange artifact deck that wants durable pressure with incremental reach attached, it is workmanlike rather than marquee, but the ping gives it a function beyond raw stats.