Events

The Calamity Mod adds new drops and mechanics to existing vanilla events, as well as two new unique events.

Blood Moon
Blood Moons can be summoned using the Blood Relic. All enemies during blood moons have a chance to drop Blood Orbs, which are used as an alternative method to craft all vanilla potions as well as most of Calamity's. A blood moon must be active in order for the Drunk Princess to sell the Bloody Mary and for it to grant its beneficial effects. Killing the Lunatic Cultist during this event causes it to drop a unique Lore item. After Moon Lord has been defeated, all enemies have their health increased by 3.5x, and they deal 100 more damage.

Goblin Army
A variety of new loot is dropped by the enemies during a Goblin Army. In Hardmode, the Goblin Sorcerer, Goblin Summoner, and the Shadowflame Apparation are able to inflict the Shadowflame debuff onto the player in Revengeance Mode.

Rain
Rain can be toggled using the Torrential Tear tool. It will also begin to rain upon summoning Storm Weaver when outside of the Boss Rush.

In Death Mode, several additional effects may occur:
 * Lightning strikes on the Surface.
 * Icicles fall down in the Snow biome.
 * Cthulhunadoes spawn instead of Sharknadoes on the Ocean surface.

Acid Rain


The Acid Rain is a weather event that has a 1/360000 chance to start every tick (1/6000 every second) after the Eye of Cthulhu has been defeated.

Throughout the duration of the event, all players and enemies in the Sulphurous Sea during the Rain will be inflicted with the Irradiated debuff. Numerous new enemies will spawn in the biome at different points of progression, with the events enemies receiving increases to their stats to make them more suited for each point in progression. The first tier of the event is made available after the player has defeated the Eye of Cthulhu, the Second Tier is made available after the Aquatic Scourge is defeated and the final tier is made available once the player defeats the Polterghast.

Sandstorm
Sandstorms are summonable in Hardmode using the Arid Artifact. In Pre-Hardmode, sandstorms can only begin naturally once the Desert Scourge has been defeated. The Mighty Wind debuff is disabled whenever a boss is alive. Several new drops have been added to the event, and Forbidden Fragments are included in multiple new recipes as well. Furthermore, a new mini boss, the Great Sand Shark, can be summoned using the Sandstorm's Core after Plantera has been defeated.

Pirate Invasion
Three new ranged weapons are dropped during the Pirate Invasion, by Pirate Crossbowers and Pirate Deadeyes.

Solar Eclipse
Solar Eclipses become ludicrously more difficult after defeating Jungle Dragon, Yharon's first phase. All enemies have their health increased by 32.5x, contact damage increased by 150, and projectile damage increased by 100. All enemies slain during a buffed Solar Eclipse will drop Darksun Fragments.

Frost Moon
The Frost Moon event becomes significantly more difficult after The Devourer of Gods has been defeated. All enemies have their health increased by 6x, contact damage increased by 100, and projectile damage increased by 70. During the buffed event, Ice Queens have a more difficult AI and some enemies will drop Endothermic Energy when slain.

Pumpkin Moon
The Pumpkin Moon event becomes significantly more difficult after The Devourer of Gods has been defeated. All enemies have their health increased by 7.5x, contact damage increased by 100, and projectile damage increased by 70. During the buffed event, Pumpkings have a more difficult AI and some enemies will drop Nightmare Fuel when slain.

Old One's Army
All enemies from the Old One's Army except for Etherian Goblins, Etherian Goblin Bombers, Etherian Javelin Throwers and Etherian Lightning Bugs are immune to Glacial State, Temporal Sadness, Time Distortion and Webbed. Only one new legendary weapon is dropped from Betsy in Tier 3 (Post-Golem) on Wave 7.

Martian Madness
A magic gun, a rogue bomb, and a unique ranged weapon are dropped by various enemies during the Martian Madness invasion.

Lunar Events
All event enemies spawned during the event have a chance to drop Lunar Fragments from their respective pillars as well as Meld Blobs, a crafting material used for Meld Constructs. Additionally, Storm Divers have a low chance to drop the rare Conference Call weapon.

The Celestial Pillars also require enemies to be defeated in Expert Mode before their shields go down, as compared to the original. This can be reverted through the configuration options.

Boss Rush


The Boss Rush is a special event activated by using Terminus, an item obtained from the Shrine at the bottom of the Abyss. During the event, all vanilla and Calamity bosses will spawn in a unique sequence, each with their own modified behaviors and buffed stats.