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what to do with rare ergo lies of p

You have two main options for what to do with Rare Ergo in Lies of P , and one of them is much better long‑term: usually you should save them for boss weapons/amulets rather than cashing them in for quick currency.

What Rare Ergo actually is

  • Rare Ergo is a special kind of Ergo dropped by bosses, similar to “boss souls” in other Souls‑likes.
  • You only get one of each boss’s Rare Ergo per playthrough , so every one you spend is a permanent choice.
  • Like normal Ergo, you can still turn it into currency for levels, items, or upgrades.

Your two choices: consume or trade

1. Consume Rare Ergo (short‑term gain)

If you consume Rare Ergo directly:

  • You get a big chunk of normal Ergo (often several thousand at once, much more than standard fragments).
  • This is tempting early on if you’re stuck on a boss and want quick levels or upgrades.
  • But once it’s consumed, that specific Rare Ergo is gone for the rest of the run.

This path is only really worth it if:

  1. You’re struggling badly and need an immediate power spike, or
  2. You’re on a later playthrough and already got the boss weapons you care about.

2. Save and trade with Alidoro (long‑term reward)

If you hold onto them instead:

  • Rare Ergo can be traded with Alidoro , the treasure‑hunter NPC you meet later in the game.
  • He lets you exchange each Rare Ergo for a unique boss weapon or amulet , which you cannot get in any other way in that playthrough.
  • These boss weapons often have special movesets and strong scaling , making them some of the most interesting tools for certain builds.

Because each boss’s Rare Ergo is unique and limited to one per run, most guides and veteran players recommend saving all Rare Ergo until you reach Alidoro and see the trade options.

Practical advice: what you should do

To keep it simple:

  1. Do not consume Rare Ergo early , even if you’re low on levels. Use regular Ergo and fragments instead.
  1. Keep every Rare Ergo in your inventory until you meet Alidoro and can view the boss weapon/amulet list.
  1. When you see his shop:
    • Pick weapons or amulets that match your build (e.g., motivity vs technique scaling, or a specific moveset you like).
 * Only if you truly don’t want _any_ of the options for a particular Rare Ergo should you consider consuming that one for raw currency.

A rough rule:

If this is your first playthrough , assume you should save Rare Ergo for trades, not for quick Ergo.

Small “build planning” example

Imagine you’re running a technique‑focused build:

  • Boss weapons that scale with technique and offer fast, flashy moves will usually be worth their Rare Ergo cost.
  • You might skip a heavy motivity weapon and, in that one case, consume that boss’s Rare Ergo for a big currency boost instead.

Treat each Rare Ergo like a voucher : it’s either a unique weapon/amulet or a pile of levels, but you only get to choose once per boss.

Quick forum‑style answer

If you’re wondering “what to do with Rare Ergo in Lies of P,” the safest play is: don’t pop them. Hold onto all Rare Ergo until you unlock Alidoro’s trades, then spend them on boss weapons/amulets that fit your build. Only consume ones tied to gear you’re sure you’ll never use.

TL;DR: Save Rare Ergo for Alidoro’s unique boss weapons/amulets; consuming them for normal Ergo should be a rare, intentional choice, not your default.

Information gathered from public forums or data available on the internet and portrayed here.