Kolodin, Triumph Caster

Mounts and Vehicles were designed with a tax baked into their card type: a Mount enters dormant and asks for a saddling cost, and a Vehicle sits inert as a noncreature artifact until crew is paid. Those costs are the price for oversized bodies and conditional abilities, and they usually cost you the turn the permanent arrives. Three abilities dismantle that price. A triggered ability saddles every Mount as it enters; a second turns every Vehicle into an artifact creature on arrival; and a static ability hands the whole board haste, so none of it waits. Strip the setup and the payload lands intact. The detail that keeps this from breaking outright lives in the duration: a Vehicle animated on the way in reverts once your turn ends, offering no defense on the opposing turn unless you crew it the ordinary way, so the effect stays an attacking tool rather than a permanent free body. The result punishes any deck treating Mounts and Vehicles as occasional inclusions and rewards one that commits fully: a clunky, setup-heavy permanent base converted into an immediate wave of hasty attackers, the two triggers doing the animation and saddling work while the static keeps everything swinging the turn it lands.