Zombie Donut Trap

Setup
/stats block ~ ~-1 ~ set QueryResult @a frightnight --- Run Against Time Query ---
/scoreboard objectives add mobspawn dummy
/scoreboard objectives add frightnight dummy
/scoreboard objectives add mobfire dummy

Mechanic
/time query daytime  ---- this command block requires the stat above ----
/execute @p[score_frightnight_min=24000] ~ ~ ~ time set 0
/scoreboard players set @e[type=Zombie] mobfire 1 {Fire:130s}
/execute @e[type=Zombie,score_mobfire_min=1] ~ ~ ~ /summon ArmorStand ~ ~1 ~ {CustomName:"zombie",CustomNameVisible:0,Marker:1b,Invisible:1,PersistenceRequired:1}
/execute @e[type=Zombie,score_mobfire_min=1] ~ ~ ~ detect ~ ~ ~ air 0 execute @e[name=zombie,r=1] ~ ~ ~ /setblock ~ ~-1 ~ minecraft:skull 1 replace {Owner:{Id:"6d38a755-bcf4-4c26-ab82-19a0e54dabab",Properties:{textures:[{Value:"eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvZDA3YjhjNTFhY2VjMmE1MDhiYjJmYTY1MmZiNmU0YTA4YjE5NDg1MTU5YTA5OWY1OTgyY2NiODhkZjFmZTI3ZSJ9fX0="}]}},SkullType:3,Rot:-8}
/tp @e[type=Zombie,score_mobfire_min=1] ~ -300 ~

/execute @a ~ ~ ~ execute @e[name=zombie,r=3] ~ ~ ~ setblock ~ ~ ~ air
/execute @a ~ ~ ~ kill @e[name=zombie,r=2]
/scoreboard players add @e[type=Item] mobspawn 1 {Item:{id:"minecraft:skull",Damage:3s,tag:{SkullOwner:{Id:"6d38a755-bcf4-4c26-ab82-19a0e54dabab"}}}}
/execute @e[type=Item,score_mobspawn_min=2] ~ ~ ~ /summon Zombie ~ ~1 ~ {Equipment:[{},{},{},{},{id:stone_button,Count:1}],DropChances:[0.085F,0.085F,0.085F,0.085F,0.0F]}
/kill @e[type=Item,score_mobspawn_min=5]
/execute @p[score_frightnight_min=6000,score_frightnight=6100] ~ ~ ~ entitydata @e[type=Zombie] {Equipment:[{},{},{},{},{id:air}]}

/execute @p[score_frightnight_min=13000,score_frightnight=13001,c=1] ~ ~ ~ execute @e[name=zombie] ~ ~ ~ summon Zombie
/execute @p[score_frightnight_min=13000,score_frightnight=13001,c=1] ~ ~ ~ execute @e[name=zombie] ~ ~ ~ setblock ~ ~ ~ air 0 replace skull
/execute @p[score_frightnight_min=13000,score_frightnight=13001,c=1] ~ ~ ~ execute @e[name=zombie] ~ ~ ~ kill @e[type=Item,r=1]
/execute @p[score_frightnight_min=13000,score_frightnight=13001,c=1] ~ ~ ~ kill @e[name=zombie]