Bastion

Citadel stops people from breaking your blocks, but it cannot stop them from placing grief inside your city. Bastions add an area-of-effect protection around reinforced beacons and conduits.

Requires: Citadel and Interaction Keys

City bastion (beacon)

A beacon becomes a city bastion when it is Citadel-reinforced and has a key bind. The lock does not need to be engaged.

PropertyValue
Field radiusBased on beacon pyramid tier (20 / 30 / 40 / 50 blocks for tiers 1-4)
EffectBlocks enemy reinforcement inside the field
Damage to bastion2/20 Citadel HP on direct reinforcement block; 1/20 on overlap

Use city bastions to protect farms, cities, and large areas where you need to stop enemies from reinforcing grief.

Vault bastion (conduit)

A conduit becomes a vault bastion when it is reinforced and the key bind is locked.

PropertyValue
Field radiusVanilla conduit formula: floor(frameBlocks / 7) × 16
EffectBlocks block placement, buckets, pearls, chorus fruit, teleports, piston entry, fluid flow, and more
Damage to bastionSame fractional HP model as city bastions

Vault bastions are for high-security areas: vaults, pearl storage, wealth storage. They also block ender pearls, so pearling into a vault field is blocked unless you have the key.

Bypass

If you carry a matching key anywhere in your inventory (including shulkers), you skip all bastion effects.

Config reference

OptionDefault
tier-radius.1-420 / 30 / 40 / 50
city-reinforcement-full-damage-parts2
overlap-damagetrue