Making the Treachery runeword in D2 Resurrected items requires a set of three-socket body armor to serve as a base for the runeword. When playing on Normal difficulty, the lowest level 3-socket body armor is Light Plate, which begins dropping in Act III of the game, although you may be able to obtain it earlier in the Secret Cow Level. Additionally, you can obtain a non-socketed set of Light Plates and then add sockets to them using the Horadric Cube or by speaking with Larzuk during Act V.
The Treachery runeword recipe, 'ShaelThu...
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