fill 29 4 26 ~ ~ ~ minecraft:air replace minecraft:water # NBT (JSON-like) value. summon zombie ~ ~ ~ {NoAI:1b} # Target selector gamemode creative @a # With argument kill @e[type=chicken,nested={a0=0,a1=1}] # Range kill @e[y_rotation=0..180] # Legacy and new style placefeature minecraft:bonus_chest ~ ~ ~ place feature minecraft:bonus_chest ~ ~ ~