GroupDamageResist:
  Cooldown: 5
  Conditions:
  - targetwithin 20
  - offgcd true
  Skills:
  - GCD 60
  - msg 10:'$boss&e begins casting a spell.' >0 1
  - potionself SLOW:60:7
  - delay 60
  - msg 10:'$boss&e shields their allies.' >0 1
  - effect:particles{particle-magicCrit,amount-250,vSpread-1,hSpread-2,Speed-1,yoffset-2} @MobsInRadius{radius=10;types=witch,skeleton,witherskeleton}
  - potionmobs 10:DAMAGE_RESISTANCE:100:5 witch, witherskeleton, skeleton >0 1