Bug, the Vicious Tortie

Flash, death touch
Creatures you control have protection from Rats and Squirrels while Bug, the Vicious Tortie is in play. (They can't be blocked, targeted, or dealt damage by Rats or Squirrels).
Partner - If Bug, the Vicious Tortie is on the field with Roo, the Thick Protector, give both creatures +2/+2