Siege Expert. The excavator deals double damage to objects and structures.
Multiattack. The excavator makes three Thunderous Warhammer attacks.
Thunderous Warhammer. Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit:7 (1d10 + 2) thunder damage.
Telekinetic Toss (Recharge 5–6). The excavator targets one Medium or smaller creature or an object weighing 300 pounds or less that isn't being worn or carried. The target, which must be within 30 feet of the excavator and visible to it, is magically pushed up to 20 feet horizontally in a direction of the excavator's choice. If the target is a creature, it can make a DC 13 Strength saving throw to resist the effect and is not pushed on a successful save.
Field research is often dangerous work, especially when it involves ancient magic and monster-infested ruins. Scholarly excavators are trained to deal with those dangers, adept at protecting their allies and clearing obstacles from their path.