Brute. A melee weapon deals one extra die of its damage when the bastion hits with it. (Included in attack)
Shelter. Allies within 5 feet of the bastion gain a +2 bonus to their AC, if the bastion is not prone or incapacitated.
Shield Charge. If the bastion moves at least 10 feet straight toward a target and then hits it with its flail on the same turn, the target takes an extra 13 (3d8) bludgeoning damage. If the target is a creature, it must succeed on a DC 15 Strength saving throw or be knocked prone.
Multiattack. The bastion makes three weapon attacks.
Flail. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 13 (2d8 + 4) bludgeoning damage.
Javelin. Ranged Weapon Attack: +7 to hit, range 5 ft. or range 30/120 ft., 1 target. Hit: 11 (2d6 + 4) piercing damage at range.
Block. The bastion adds +3 AC against an attack that would normally hit it. To do so, the bastion must see the attacker and be wielding a shield.