Drones- AC 14, CMD 16 (20 vs trip), HP 30/30
The drones converge on the beast nearest them.
The Drone next to the beast isn't moving. The other two are charging in to help pack-mob the thing.
The first canine-looking drone rushes in on the opposite side of the one who was already engaged, acting much like the creatures who's form they were imitating.
Drone 1, Charge, Flanking: 1d20 + 4 + 2 ⇒ (9) + 4 + 2 = 15
Damage: 1d6 + 3 ⇒ (3) + 3 = 6
Trip (if attack hits): 1d20 + 6 ⇒ (4) + 6 = 10
May provoke if creature has reach
Then the second one follows suit.
Drone 1, Charge, Flanking: 1d20 + 4 + 2 ⇒ (16) + 4 + 2 = 22
Damage: 1d6 + 3 ⇒ (4) + 3 = 7
Trip (if attack hits): 1d20 + 6 ⇒ (12) + 6 = 18
May provoke if creature has reach
Finally the third, who was already engaged by the creature, moved closer to chomp with it's metal jaws.
Drone 1, Charge, Flanking: 1d20 + 4 + 2 ⇒ (10) + 4 + 2 = 16
Damage: 1d6 + 3 ⇒ (2) + 3 = 5
Trip (if attack hits): 1d20 + 6 ⇒ (20) + 6 = 26