To summon the Old One's Army in Terraria, you need to have a minimum of 75 maximum health and defeat at least one Mechanical Boss. Then, visit the Tavernkeep and purchase the Eternia Crystal Stand for 5 gold. Place it and activate it to start the event.
Summoning the Old One's Army in Terraria
In Terraria, the Old One's Army is an event that players can participate in to defend the Eternia Crystal from waves of enemies. To summon the Old One's Army, you will need to follow a specific set of steps using Eternia Crystals and the Eternia Crystal Stand. The event was introduced in the 1.3 update of Terraria and provides players with a unique challenge and the opportunity to earn powerful rewards. The Old One's Army event can be triggered in both pre-Hardmode and Hardmode worlds.
Acquiring Eternia Crystals
To summon the Old One's Army, you first need to acquire Eternia Crystals. You can obtain Eternia Crystals by purchasing them from the Tavernkeep NPC, who will move into an available house once the player has defeated the Eater of Worlds or Brain of Cthulhu. The Tavernkeep sells the crystals for coins. The number of Eternia Crystals you need will depend on the difficulty setting you choose for the event with either 1, 3, or 5 crystals required.
Setting up the Eternia Crystal Stand
Once you have obtained the required number of Eternia Crystals, you can set up the Eternia Crystal Stand to summon the Old One's Army. To do this, you need to place the Eternia Crystal Stand on flat ground in an open area. Make sure there is enough space around the stand to maneuver and defend the Eternia Crystal during the event. It is recommended to clear out any obstacles or terrain that could impede your movement during the battle.
Activating the Eternia Crystal
After setting up the Eternia Crystal Stand, you can activate the Eternia Crystal by interacting with it. This will consume the required number of Eternia Crystals and trigger the Old One's Army event. Once the event is activated, waves of enemies will begin to spawn and make their way towards the Eternia Crystal. Your objective is to defend the crystal from these enemies and prevent them from destroying it. The event consists of multiple waves with increasing difficulty, culminating in a boss fight against Betsy, the event's final boss.
Defending the Eternia Crystal
To succeed in the Old One's Army event, you will need to build defenses, defeat enemies, and strategize to protect the Eternia Crystal. The event features a unique gameplay mechanic where you can summon and control sentries to aid you in battle. Sentries are stationary minions that can attack enemies automatically within their range. You can purchase sentry summons from the Tavernkeep using Defender Medals, which are earned by completing event waves and defeating enemies.
Preparing for the Event
Prior to summoning the Old One's Army, it is advisable to prepare for the event by equipping powerful weapons, armor, and accessories. Make sure you have adequate potions, buffs, and healing items to sustain yourself during the battle. Creating a strategic layout with traps, platforms, and sentries can help you defend the Eternia Crystal more effectively. Coordinating with other players in multiplayer can also enhance your chances of success in the event.
Rewards and Completion
Successfully defending the Eternia Crystal through all the event waves and defeating Betsy will reward you with Defender Medals, which can be used to purchase unique weapons, armor, and accessories from the Tavernkeep. These items are exclusive to the Old One's Army event and offer powerful bonuses and abilities. Additionally, completing the event in different difficulty settings or with specific challenges can unlock achievements and provide a sense of accomplishment for players.