Ender Boom!

en 1.8.8 or lower really any version except 1.9 (will lag) on 1.9 /setblock Mobs & Pets

a crazy boss (no mods!) be warned if on survival it is a Killer

The command

Note: Minify the command to avoid issues :)

/setblock ~0 ~7 ~0 mob_spawner 0 replace {SpawnCount:1,SpawnRange:4,maxNearbyEntities:6,Delay:20,MinSpawnDelay:60,MaxSpawnDelay:120,EntityId:EnderDragon,SpawnData:{Equipment:[{Count:1,id:diamond_sword,tag:{display:{Name:boom bomb,Lore:[diamond sword]}}},{id:diamond_boots},{id:golden_leggings},{id:leather_chestplate},{Count:1,id:leather_helmet,tag:{display:{Name:lowdave's head}}}],CustomName:Ender Boom!,CustomNameVisible:1,DropChances:[2.0F,0.0F,0.0F,0.0F,0.7F],ActiveEffects:[{Id:22,Amplifier:1,Duration:999999},{Id:12,Amplifier:1,Duration:999999},{Id:21,Amplifier:1,Duration:999999},{Id:7,Amplifier:1,Duration:999999},{Id:6,Amplifier:1,Duration:999999},{Id:14,Amplifier:1,Duration:999999},{Id:8,Amplifier:1,Duration:999999},{Id:4,Amplifier:1,Duration:999999},{Id:16,Amplifier:1,Duration:999999},{Id:10,Amplifier:1,Duration:999999},{Id:11,Amplifier:1,Duration:999999},{Id:23,Amplifier:1,Duration:999999},{Id:1,Amplifier:1,Duration:999999},{Id:5,Amplifier:1,Duration:999999},{Id:13,Amplifier:1,Duration:999999}]}}

Created: Tue, 24 Nov 2015 21:46:36, Updated: Thu, 03 Dec 2015 18:10:17, Views: 6