Rage of the Sifters

Rage of the Sifters is a level 33 side quest in Singer's Meadow, deep enough into the campaign that the enemies and the rewards both assume a developed hero. The quest is compact — seven objectives — and its flow is a clean three-act loop. You head into the wild meadows and speak with an Echo Golem, who directs you to the final banner. Finding the banner means confronting the illager presence there: you rip out the illager roots that have taken hold, which provokes the ambush, and after the arena fight you return to the Singer and speak with them to finish the quest.
Rewards
First completion grants the full Sifter armor set — Robe, Hood, Boots and Leggings — making this the dedicated farming quest for that four-piece family. There is no boss encounter and no repeat-run rewards listed; the value is entirely in the first clear. Because armor pieces in Minecraft Dungeons II each carry their own unique effect, a full set run like this is worth doing even if you only want one or two pieces for a mixed build — see Armor for how set pieces mix across families.
Connections
You must finish Lost Harmonies — Minecraft Dungeons II Quest Guide before this quest becomes available, so it continues the Singer's Meadow quest line. At level 33 it also sits near the top of the level curve, close to The Final Souldown — a good pairing for a session: run the meadow quest for the Sifter set, then push the finale.