Shaggy n Scooby, The Inseperab

Shaggy n Scooby, The Inseperable enter the battlefield with 3 scare counters on them. Whenever a creature enters the battlefield place a scare counter on them. Each time Shaggy n Scooby The Inseperable attack,
move a scare counter onto target creature opponent controls. That creature cant
attack or block until their next turn.