Reaver

Reaver is the knife that started the Evo line. The Reaver Gamepass went on sale on October 23, 2021, during the Halloween Event 2021, at 1,699 Robux, and the knife it delivers does not stay the same: it begins as a Rare and changes shape as the owner earns XP with it equipped.

The four stages

Per the Evo Weapons page, the Legendary stage unlocks at 36,000 XP, Godly at 216,000 XP and Ancient at 864,000 XP in total. The first form uses the Default Knife mesh in dark purple with green cracks, and the second is a cleaner version with a lighter shimmer on the guard and handle. The Godly form is a long grey blade with a jagged green edge and three stone vines, plus a second blade on the guard and a purple paracord handle. The Ancient form is a double-bladed scythe with stone-grey blades, green edges, vines wrapped around the blades and green arrowheads at the ends of a long black handle. IDontHaveAUse designed every variant.

Ownership

Evo weapons cannot be traded, and Reaver was the first gamepass weapon with that restriction. With the pass off sale, the knife can no longer be obtained. Its partner gun is the Ancient Harvester, which came out at the same time. Reaver is also the only Evo knife without leaderboard variants, and the wiki says its Ancient form is the first and only double-bladed scythe.