Orthocera Shell

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Orthocera Shell
  • Orthocera Shell.png
Stack digit 1.png
Damage53 Summon
Knockback2 (Very Weak)
Mana cost10
Use time24 Slow
TooltipSummons a flying orthocera sentry at the mouse position
Inflicts DebuffAcid VenomAcid Venom
100% chance

Debuff duration3 seconds
Debuff tooltipLosing life
Inflicts DebuffIrradiatedIrradiated
100% chance

Debuff duration3 seconds
Debuff tooltipYour skin is burning off
RarityRarity Level: 5
Sell 4 Gold Coin.png 80 Silver Coin.png
Research1 required
Dropped by
Summons Sentry
Flying Orthocera
Flying Orthocera.gif

The Orthocera Shell is a Hardmode sentry that is dropped by Orthoceras. It summons a stationary flying Orthocera sentry that shoots streams of acid at nearby enemies. The acid streams pierce up to two enemies along with inflicting the Acid Venom and Irradiated debuffs.

Its best modifier is Ruthless. The Mythical modifier provides the widest array of stat bonuses, but these primarily affect the initial summon rather than the resulting minion. Additionally, minions cannot deal critical hits. The only lasting advantage a Mythical Orthocera Shell has over a Ruthless one is knockback.


These history sections are still a work-in-progress, and may not yet contain changes relevant to the current version of the Calamity Mod.
    • Now inflicts Irradiated for 3 seconds.
    • Decreased sell price from 7 Gold Coin.png 20 Silver Coin.png to 4 Gold Coin.png 80 Silver Coin.png.
  • Now inflicts Venom for 3 seconds instead of 4.
  • Now has a use time of 24 instead of 25.