A Z-Arbalest was an extremely fast ship invented by the Z. Shipyard & Foundry Centre for the Epsilon Order of Zeno nearly a millennium after the Day of Eternal Potency. The Z-Arbalest was the first ship that could travel at and over the speed of light. Underneath its extremely compressed, dense hull is a layer of Zenocore crystal to keep the ship from breaking apart. If the Z-Arbalest were to continually travel at its top speed, it could -- in theory -- break its own speed limit and exceed improbable speeds, likely resulting in space malformation and the possible creation of blackholes.