Pack Tactics. The rat has advantage on an attack roll against a creature if at least one of the rat’s allies is within 5 ft. of the creature and the ally isn’t incapacitated.
Bite. Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 4 (1d4+2) piercing damage.
Roll to hit: 1d20+4 Roll damage: 1d4+2