{ "feature": "minecraft:flower_plain", "placement": [ { "type": "minecraft:noise_threshold_count", "above_noise": 4, "below_noise": 15, "noise_level": -0.8 }, { "type": "minecraft:rarity_filter", "chance": 32 }, { "type": "minecraft:in_square" }, { "type": "minecraft:heightmap", "heightmap": "MOTION_BLOCKING" }, { "type": "minecraft:biome" } ] }