Bacterium Prime

Bacterium Prime is a new boss added by the Exxo Avalon mod found in the Contagion.

How to Summon
Bacterium Prime is summoned through breaking 3 of the "Snot Orbs" found in the Contagion ring, or crafting a Bacterial Totem.

First Phase
When in its first stage, Bacterium Prime will act similarly to the Brain of Cthulhu. It will send minions after the player. However, if you hit the main body of the boss, it will increase a counter variable, and if that hits 12, it will spawn another minion. The boss is immune to damage in this phase.

Second Phase
In phase 2, its eye will open and the boss will get faster. It has 1500 HP in this phase, making it quite an easy target.

Loot
On death, the boss and its minions will drop Baccilite Ore and Boogers which is the Contagion biome's ore and the counterpart to Crimtane/Demonite.