Thorium Mod Wiki
Note: For defense mechanics, refer to Defense on the Terraria Wiki

Defense Boosts[]

Item Accessory Defense
Family Heirloom.pngFamily Heirloom 1
Sea Turtle's Bulwark.pngSea Turtle's Bulwark 2
Champion's Rebuttal.pngChampion's Rebuttal 2
Prydwen.pngPrydwen 2
Blooming Shield.pngBlooming Shield 2
Obsidian Scale.pngObsidian Scale 3
Ocean's Retaliation.pngOcean's Retaliation 3
Goblin War Shield.pngGoblin War Shield 4 (while standing still)
Molten Scale.pngMolten Scale 4
The Cape of the Survivor.pngThe Cape of the Survivor 4
Astro-Beetle Husk.pngAstro-Beetle Husk 5 (while life shield is present)
Mantle of the Protector.pngMantle of the Protector 5
Artificer's Shield.pngArtificer's Shield 2 for every 20 artificer's energy
Ball n' Chain.pngBall n' Chain 8
Terrarium Defender.pngTerrarium Defender 20 (absorbs 25% of damage done to players on your team; only active below 25% life)
Metallurgy Shield Accessory Defense
Copper Buckler.pngCopper Buckler 1
Tin Buckler.pngTin Buckler 1
Iron Shield.pngIron Shield 1
Lead Shield.pngLead Shield 1
Silver Bulwark.pngSilver Bulwark 2
Tungsten Bulwark.pngTungsten Bulwark 2
Gold Aegis.pngGold Aegis 2
Platinum Aegis.pngPlatinum Aegis 2
Thorium Shield.pngThorium Shield 3
Buff / Debuff Temporary Defense
Bloom Boost.pngBloom Boost 5
Frost Heart.pngFrost Heart 10
Terraria's Kiss.pngTerraria's Kiss 20
Empowerment - Defense.pngEmpowerment - Defense Increases defense by 4/8/12/16
Aura - Holy Shine.pngAura - Holy Shine Defense of players within aura increased by 10
Holy Defense.pngHoly Defense Defense of healed allies increased by 20

Damage Reduction Boosts[]

Item Source Damage reduction bonus
Amethyst Ring.pngAmethyst Ring Band.png + Amethyst.png   @   Iron Anvil.png 3 (only if damage taken exceeds 4)
The Ring.pngThe Ring Ruby Ring.png + Amber Ring.png + Topaz Ring.png + Emerald Ring.png + Pearl Ring.png + Sapphire Ring.png + Amethyst Ring.png + Opal Ring.png + Diamond Ring.png + Onyx Ring.png   @   Iron Anvil.png 4 (only if damage taken exceeds 5)
Fear Monger.pngFear Monger Flesh Knuckles.png / Putrid Scent.png + 10 Purified Shards.png   @   Tinkerer's Workshop.png 6%
The Cape of the Survivor.pngThe Cape of the Survivor Mantle of the Protector.png + Spirit Band.png + Worm Scarf.png   @   Tinkerer's Workshop.png 5%
Astro-Beetle Husk.pngAstro-Beetle Husk Astro Beetle 5%
Blast Shield.pngBlast Shield Sold by Weapon Master after defeating Plantera (35 Gold Coin) 10%
Buff Source Damage reduction bonus
Protective Energy.pngProtective Energy Ancient Aegis.pngAncient Aegis Damage reduction for allies increased by 5%
Turn Undead.pngTurn Undead
Soul Guard.pngSoul Guard
Aura - Holy Shine.pngAura - Holy Shine Celestial armor.pngCelestial armor 10%
Parry Stance.pngParry Stance Rapier.pngRapier 10% (only after hitting an enemy)
Empowerment - Damage Reduction.pngEmpowerment - Damage Reduction Bard items 3%/6%/9%/12%
Lodestone Defense 3.pngLodestone Defense Lodestone armor.pngLodestone armor 10%/20%/30%

Armor Penetration[]

Armor penetration is a statistic that reduces the defense of the player's targets. For instance, Abomination normally has 8 defense. If the player has 5 armor penetration, then damage dealt to the Abomination will be calculated using 3 defense instead of 8.

Item Source Armor penetration bonus
Dragon's Talon Necklace.pngDragon's Talon Necklace Shark Tooth Necklace.png + 6 Green Dragon Scale.png   @   Mythril Anvil.png 15