Obsidium Heart

The Obsidium Heart is a light pet obtainable from deep within the Obsidium biome.

It will circle around the player, emitting small amounts of light as it travels.

The heart spawns on a red pillar long down in the world inside a heart shaped container, (visible on the map from the Obsidium page). It can also be grown by putting down a row of Magma Shards.The buff gives +25 max life, and can be dismissed with right-click.