One year ago... Disco created a santa boss fight. One year later, I brought it to life

To begin this boss fight, download this schematic and place it into your world. You will then need to spawn in a command block and paste this long code:

/summon MinecartSpawner ~ ~1 ~ {EntityId:Creeper,SpawnData:{Invulnerable:1,Fuse:1,ExplosionRadius:1,ActiveEffects:[{Id:14,Amplifier:0,Duration:1000000,Ambient:1}],Attributes:[{Name:generic.movementSpeed,Base:0.001},{Name:generic.followRange,Base:1}],Riding:{id:FallingSand,Motion:[0.0,1.0,0.0],TileID:144,Time:1,Data:1,TileEntityData:{SkullType:3,ExtraType:CruXXx}}},SpawnCount:2,SpawnRange:3,RequiredPlayerRange:64,Delay:10,MinSpawnDelay:10,MaxSpawnDelay:100,MaxNearbyEntities:2,Riding:{id:MinecartSpawner,EntityId:Zombie,SpawnData:{IsBaby:1,Equipment:[{id:257,Count:1},{id:301,Count:1,tag:{display:{color:6524195}}},{id:300,Count:1,tag:{display:{color:6524195}}},{id:299,Count:1,tag:{display:{color:6524195}}},{id:298,Count:1,tag:{display:{color:6524195}}}]},SpawnCount:5,SpawnRange:3,RequiredPlayerRange:64,Delay:10,MinSpawnDelay:10,MaxSpawnDelay:100,MaxNearbyEntities:6,Riding:{id:MinecartSpawner,Invulnerable:1,EntityId:Item,SpawnData:{Item:{Age:5950,id:79,Count:1,Damage:2,display:}},SpawnCount:100,SpawnRange:10,RequiredPlayerRange:64,Delay:1000,MinSpawnDelay:500,MaxSpawnDelay:1000,MaxNearbyEntities:100,Riding:{id:MinecartSpawner,EntityId:Snowball,SpawnData:{Riding:{id:Creeper,Invulnerable:1, Fuse:1,ExplosionRadius:1,ActiveEffects:[{Id:14,Amplifier:0,Duration:1000000,Ambient:1}],Attributes:[{Name:generic.movementSpeed,Base:1.0},{Name:generic.followRange,Base:100}]}},SpawnCount:1,SpawnRange:5,RequiredPlayerRange:64,Delay:10,MinSpawnDelay:50,MaxSpawnDelay:500,MaxNearbyEntities:2,Invulnerable:1,Riding:{id:Slime,Size:-2,Invulnerable:1,ActiveEffects:[{Id:14,Amplifier:0,Duration:1000000,Ambient:1}],Riding:{id:Slime,Size:-2,Invulnerable:1,ActiveEffects:[{Id:14,Amplifier:0,Duration:1000000,Ambient:1}],Riding:{id:Slime,Size:-2,Invulnerable:1,ActiveEffects:[{Id:14,Amplifier:0,Duration:1000000,Ambient:1}],Riding:{id:Slime,Size:-2,Invulnerable:1,ActiveEffects:[{Id:14,Amplifier:0,Duration:1000000,Ambient:1}],Riding:{id:Slime,Size:-2,Invulnerable:1,ActiveEffects:[{Id:14,Amplifier:0,Duration:1000000,Ambient:1}],Riding:{id:Slime,Size:-2,Invulnerable:1,ActiveEffects:[{Id:14,Amplifier:0,Duration:1000000,Ambient:1}],Riding:{id:Zombie,Attributes:[{Name:generic.maxHealth,Base:150}],Equipment:[{id:54,Count:1},{id:301,Count:1,tag:{display:{color:0}}},{id:300,Count:1,tag:{display:{color:10027008}}},{id:299,Count:1,tag:{display:{color:10027008}}},{id:397,Damage:3,Count:1,tag:{SkullOwner:santa7474}}]}}}}}}}}}}}

Santa has 4 abilities: Summon Minion (Summons elves to do his bidding), Present Mine (Creates a present land mine), Deep Freeze (Freezes the air around you, slowing you the longer you stay in range), and Homing Snowball (Fires a magic snowball that quickly homes in on you and explodes)

Good Luck!

~~~WARNING~~~ SANTA CAN CAUSE WORLD CORRUPTION. BACK UP YOUR WORLD BEFORE SPAWNING

Merry Christmas from Frozen Chaos :D