The extended Potion of Slowness (4:00) reduces the player's movement speed by 15% for 4 minutes, significantly hindering mobility over a longer duration. It is brewed by combining a Potion of Slowness (4:00) (1:30) with Redstone Dust in a Brewing Stand. This Potion of Slowness (4:00) is effective for controlling enemies in combat or creating challenges in custom gameplay scenarios.