tronn the new boss

INIT:scoreboard objectives add mck_I dummy
INIT:scoreboard objectives add mch_I dummy
INIT:scoreboard objectives add mcd_I dummy
INIT:scoreboard objectives add mcv_I dummy

scoreboard players set @e[type=Item] mcv_I 1 {Item:{id:"minecraft:armor_stand"}}
scoreboard players set @e[type=Item] mcv_I 2 {Item:{id:"minecraft:emerald_block"}}
execute @e[score_mcv_I_min=1,score_mcv_I=1] ~ ~ ~ execute @e[r=1,score_mcv_I_min=2,score_mcv_I=2] ~ ~ ~ /summon Item ~ ~1 ~ {Item:{id:spawn_egg,Damage:94,Count:1,tag:{display:{Name:tron,Lore:[make the boss tron to life]}}}}
execute @e[score_mcv_I_min=1,score_mcv_I=1] ~ ~ ~ execute @e[r=1,score_mcv_I_min=2,score_mcv_I=2] ~ ~ ~ kill @e[type=Item,r=3,score_mcv_I_min=1,score_mcv_I=2]
execute @e[name=tron] ~ ~ ~ /summon Skeleton ~ ~1 ~ {CustomName:"tronn",CustomNameVisible:1,SkeletonType:1,Equipment:[{},{},{},{},{id:skull,Damage:3,Count:1,tag:{SkullOwner:MHF_Enderman}}],Attributes:[{Name:generic.maxHealth,Base:1000},{Name:generic.attackDamage,Base:6}],HealF:1000,Silent:1,ActiveEffects:[{Id:1,Amplifier:5,Duration:72000,ShowParticles:0b}]}

/kill @e[name=tron]
execute @e[name=tronn] ~ ~ ~ /effect @a[,r=2] 19 4 5

execute @e[name=tronn] ~ ~ ~ scoreboard players set @a[,r=1] mch_I 2
execute @a[score_mch_I_min=2,score_mch_I=2] ~ ~ ~ /summon Skeleton ~ ~10 ~ {Equipment:[{},{id:iron_boots,Count:1},{id:iron_leggings,Count:1},{id:iron_chestplate,Count:1},{id:skull,Damage:3,Count:1,tag:{SkullOwner:MHF_Blaze}}],ActiveEffects:[{Id:11,Amplifier:255,Duration:900},{Id:12,Amplifier:255,Duration:720000,ShowParticles:0b}]}
execute @a[score_mch_I_min=2,score_mch_I=2] ~ ~ ~ /summon PrimedTnt ~ ~1 ~ {CustomName:"blast",CustomNameVisible:1,Fuse:1}
execute @e[name=blast] ~ ~ ~ /scoreboard players set @a mch_I 1
execute @e[name=blast] ~ ~ ~ /scoreboard players set @a mcd_I 1
execute @a[score_mcd_I_min=1,score_mcd_I=1] ~ ~ ~ /effect @e[name=tronn] 11 7 255

execute @a[score_mcd_I_min=1,score_mcd_I=1] ~ ~ ~ /scoreboard players set @a mcd_I 0