If you were a medieval sheep farmer you'd probably be thrilled to discover new sheep magically appearing in your field every time you turned around. Wool for weeks, right? Your enthusiasm might begin to falter, though, right around the time you oversaturated the market to the point that wool was essentially worthless, not to mention you now had fields completely overstuffed with rapidly multiplying sheep...
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Ewe wool love this: new Manor Lords patch means your farm 'no longer spawns sheep exponentially'
Source: PC Gamer (opens in a new tab)