### MOB.yml ###
Destroyer:
  Type: WITCH
  AIGoalSelectors:
  - 0 clear
  AITargetSelectors:
  - 0 clear
  Options.ApplyInvisibility: true
  Skills:
  - skill{s=ServerDestruction;delay=<random.1-20>} @self ~onSpawn
  - remove{delay=21} @self ~onSpawn

### Skills.yml ###

ServerDestruction:
  Skills:
  - skill{s=ServerDestruction2} @BlocksInRadius{r=4}
ServerDestruction2:
  TargetConditions:
  - blocktype{type=BEDROCK} false
  Skills:
  - breakblock

### Crucible Item.yml ###

ServerDestroyer:
  Id: STICK
  Display: 'Good Bye'
  Skills:
  - particleline{p=mob;mob=Destroyer;a=1;db=3.5;hs=3;vs=3;zigzag=true;zzo=5} @forward{f=60;y=0} ~onUse