Jetshift/Purity Cube

Purity Cubes are friendly NPCs in Jetshift Mod that serve as guardians and helpers of maintaining world purity. There are multiple tiers of the Purity Cube, each one having a much better effect on the environment around it than the last.

There are two variants of the Purity Cube made specifically for the Ancients Awakened mod, requiring materials from that mod specifically to craft the remote needed to summon them. Both of them are slightly better than a normal Tier 1 Purity Cube, but cannot clean Corruption, Crimson or Hallow as a result.

Summon
Purity Cubes will not spawn naturally and must be summoned using a Purity Remote. These are also made in multiple tiers, each summoning their respective Purity Cube tier.

Behavior
Purity Cubes are stationary NPCs which sit in place for some time, after which they will turn to dust and disappear. The lifespan of a Purity Cube is determined by their tier:
 * Tier 1 lasts for 24 minutes, or 1 in-game day.
 * Tier 2 lasts for 48 minutes, or 2 in-game days.
 * Tier 3 lasts for 72 minutes, or 3 in-game days.

While active, they will try to detect corrupted, crimson and hallowed tiles, and revert them back to purity if such tiles are found within a radius around it, which is also determined by their tier:
 * Tier 1 cleans tiles within a 26-tile radius.
 * Tier 2 cleans tiles within a 44-tile radius.
 * Tier 3 cleans tiles within a 73-tile radius.
 * After defeating Plantera, these radii double.

It can be paused and reactivated at any time using the Transfer Pad, but it's lifespan doesn't change. They can be damaged by the player or any surrounding hostile NPCs.

Only one Purity Cube of each tier can be active at any time. If the player attempts to summon more Purity Cubes of the same tier with an NPC browser or Transfer Pads, the summoned Purity Cube will be instantly destroyed.

Notes and Tips

 * Using Purity Cubes can help with trying to stop Corruption, Crimson and Hallow from spreading to bases or certain biomes in the world.
 * Placing the Purity Cube on one side and making a hellevator on the opposite side in the area you want to keep totally pure is a good strategy to fend it off from both sides. However, this is a temporary strategy that should only be used as a last resort, due to the Purity Cube's limited lifespan.
 * It is possible for Corruption/Crimson/Hallow to override the cubes and make it difficult for them to purify the tiles on their own. As a result, you shouldn't rely on the cube alone to protect your purified land - help it by using Purification Powder or solution in a Clentaminator, or other Purity Cubes.

Trivia

 * Purity Cubes were heavily inspired by Purifying Towers from Terraria: Otherworld, which were supposed to purify the area around it from the inside out. Purity Cubes have a similar trait, but they purify random tiles within a certain range instead.
 * It is currently the only thing in Jetshift Mod that is cross-compatible with other mods.