Pack Tactics.
The drake has advantage on an attack roll against a creature if at least one of the drake's allies is within 5 feet of the creature and the ally isn't incapacitated.
Surprise Attack.
If the drake surprises a creature and hits it with an attack during the first round of combat the target takes an extra 7 (2d6) damage from the attack.
Bite.
Melee Weapon Attack:+4 to hit reach 5 ft. one target.
Hit:4 (1d6 + 1) piercing damage.