WitherBoss 2.0 by evanardo1030

setblock ~0 ~1 ~0 mob_spawner 0 replace {SpawnCount:1,SpawnRange:4,maxNearbyEntities:6,Delay:20,MinSpawnDelay:60,MaxSpawnDelay:120,EntityId:WitherBoss,SpawnData:{Attributes:[{Name:generic.maxHealth,Base:900},{Name:generic.movementSpeed,Base:1.0},{Name:generic.attackDamage,Base:200},{Name:generic.knockbackResistance,Base:900}],ActiveEffects:[{Id:15,Amplifier:1,Duration:999999},{Id:3,Amplifier:1,Duration:999999},{Id:21,Amplifier:1,Duration:999999},{Id:17,Amplifier:1,Duration:999999