• you went through the nether portal to BoomTown with Axel and the amulet Gabriel gave you

• after surviving multiple griefers, traps and the hell that's called BoomTown, you walked into the room Magnus is in

Magnus: "well what do ya know? The noobs actually survived... So what do you want with me? Come to try take my place as King Of BoomRown? If you want me to come with you for whatever reason I can't... The King of BoomTown can't leave this place"