Actions

Multiattack The longbeard makes two attacks with its Augmented Atgeir. It cannot make two augmented attacks in the same turn.
Atgeir Melee Weapon attack: +6 to hit, reach 10 ft., one target. Hit: 1d10+4 slashing damage.
Disarming Strike Melee Weapon attack: +6 to hit, reach 10 ft., one target. Hit: 1d4+4 slashing damage and the target must succeed a DC 15 STR Save or its weapon is thrown 10 ft. away.
Eruption augmentation (1/Short Rest, +Bonus Action) Melee Weapon attack: +6 to hit, reach 10 ft., one target. Hit: 1d10+4 slashing damage and at the end of your turn, lifting the weapon creates a pool of lave underneath the creature. Each creature within 5 ft. of the pool of your choice must succeed a DC 15 STR Save or take 4d6 fire damage.
Gravitas augmentation (1/Short Rest, +Bonus Action) The Longbeard thrusts his weapon into the ground creating a gravity well. Each creature within 30 ft. of you that is Large or smaller is pulled upto 10 ft. towards you. Pulled creatures must succeed a DC 15 CON Save or take 1d6 force damage and be pulled another 10 ft. towards you.
Roar of the Earth augmentation (1/Short Rest, +Bonus Action The Longbeard lets out a battle cry creating a powerful shockwave. Each creature within 10 ft. of you that is Large or smaller must succeed a DC 15 STR Save or be knocked prone.