On paper, this guy looks tough. Combined with the fact that when the party attacks him, klaxons scream and the entire deck comes to help. At this point in the adventure my group had been avoiding fights so I expected a TPK. But they avoided it by nuking the ship and ending the campaign.
Huge construct (robot), lawful evil
Armour Class 22 (natural armour)
Hit Points 283 (21d12 +147 plus 90 hp force field)
Speed 40 ft.
STR 18 (+4) DEX 24 (+7) CON 24 (+7)
INT 11 (+0) WIS 11 (+0) CHA 1 (-5)
Saving Throws Dex +13
Damage Resistances bludgeoning, piercing, and slashing from nonmagical weapons that aren’t adamantine.
Damage Immunities necrotic, poison, and psychic
Damage Vulnerabilities lightening
Condition Immunities charmed, frightened, paralyses, petrified, poisoned, stunned
Senses Darkvision 60 ft., passive Perception 19
Challenge 18 (20,000 XP)
Gift of the Machine God. As a creature of technology Bastion gains many damage and condition resistances and immunities but they are also susceptible to lighting attacks.
Construct Bane. Bastion deals an additional 7 (2d6) points of damage to constructs.
Combat Hardened. Bastion’s advanced robotic frame provides a measure of protection against attacks. Bastion has a damage threshold of 10. It reduces all damage by ten.
Empowered Attacks. Bastion’s melee attacks are treated as magical for the purpose of bypassing resistance and immunity to nonmagical weapons.
Immunity to Magic. Bastion is immune to and absorbs any spell or spell-like ability. In addition, certain spells and effects function differently against it, as detailed below.
- Magical electricity damage slows Bastion for 3 rounds, with no saving throw. If hasted, magical electricity attacks instead negate the haste effect.
- Dispel Magic negates its impeded magic ability for 1d4 rounds.
Impeded Magic. A spellcaster within 60 feet of Bastion must succeed at a concentration check (DC 15 + the level of the spell being cast Concentration check) to successfully cast a spell—if this check fails, Bastion absorbs the spell.
Overwhelming Nanite Surge (3/Day). If Bastion fails a saving throw, it can choose to succeed.
Spell Absorption. Whenever Bastion absorbs a spell, it heals 5 points of damage per spell level. Healing in excess of its normal hit point maximum grants it temporary hit points. Absorbing a spell gives the golem the benefits of machon haste (+2 AC, advantage on Dexterity saving throw, an additional imitative) for 1 round per spell level.
Spell Sunder. A creature struck by Bastion’s slam attack is targeted by dispel magic. Bastion absorbs any spells so sundered.
Multiattack. Bastion makes two force slam attacks against two opponents (so four attacks but not against the same opponent). Or it triggers its Gravitywave ability.
Force Slam. Melee Weapon Attack: +14 to hit, reach 15 ft., one target.
Hit: 20 (3d8 + 7) bludgeoning damage plus 10 (3d6) force damage, and the target is grappled (escape DC 19). Bastion can grapple up to four targets. When Bastion moves, all creatures it is grappling move with it. Additionally a target also suffers a spell sunder attack.
Gravitywave (Recharges after a long or short rest). Spinning up its shoulder mounted gravity cannons Bastion unleashes a barrage of graviton beams. The barrage targets all creatures within 30 feet of the it and each must succeed on a DC 24 Constitution saving throw, taking 45 (10d8) force damage on a failed save, or half as much damage on a successful one.
Bastion can take 3 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at the end of another creature’s turn. The dragon regains spent legendary actions at the start of its turn.
Crush. One creature that Bastion is grappling is crushed for 20 (3d10 +4) bludgeoning damage.
Fling (Costs 2 Actions). Bastion releases one creature it is grappling by flinging the creature up to 60 feed away from it, in a direction of its’ choice. If the flung creature comes into contact with a solid surface, such as a wall or floor, the creature takes 1d6 bludgeoning damage for every 10 feet it was flung.
Gravitywave. (Costs 3 Actions). See actions.
During Combat Bastion doesn’t address the PCs at all—it’s tightly focused on its job to defend the security sector’s control center. It doesn’t pursue foes from this room.
Morale Bastion fights until destroyed.
A noqual horror.