Mangosteam (Nixaurum)

Mangosteam is a Plant introduced in Plants vs. Zombies: Cosmic Expeditions. It is unlocked on the 5th day of Generic Galaxy and is the first Aquatic Plant introduced in the story mode. Upon zombies entering any of the 9 adjacent tiles to the right of Mangosteam, the Plant in question will release a concentrated cloud of steam into those designated tiles. A concentrated cloud of steam does 2nds/s. After 10 seconds, the steam will spread to 25 adjacent tiles, now dealing 1nds/s. After 10 more seconds, the steam dissipates, and if there are still Zombies in Mangosteam's target area, it will repeat this action following a delay of 1 second.

If there are multiple Mangosteams, overlaps between concentrated steam deal 2.5nds/s, while overlaps between unconcentrated steam deal 2nds/s, similarly to concentrated steam. Overlaps between concentrated steam and unconcentrated steam exist as regular concentrated steam. Overlaps accordingly will change their appearance, but last the same duration.

Origins
Mangosteam's name is a portmanteau of the words 'mangosteen' and 'steam'. Garcinia mangostana, commonly known as the mangosteen, is known for its fruit. Steam is water in a gaseous form following the process of boiling or evaporating water.

Strategy
This plant's demanding Sun cost and mediocre recharge suggest that you should likely try and use as little Mangosteams as possible. This isn't necessarily an issue, however - the attack produced has a expanding AoE effect, and lasts 20 seconds, doing 30nds total to any Zombie caught in the steam for the entire duration. The area itself is rather impressive, reaching 25 adjacent tiles (or 5x5). Furthermore, multiple Mangosteams mean more overlaps, more overlaps mean more damage. Generally speaking, an entire row of Mangosteams should suffice for a day, though you may not necessarily have the time or Sun to settle with such, so instead a formation of 2 Mangosteams on rows 2, 4 and column 𝑥 or 3 Mangosteams on rows 1, 3, 5 and column 𝑥 should suffice.

As a consequence of its low Potential Energy, Mangosteam may not necessarily be the best Plant for any strategies involving the usage of Abilities. Still, if you're able to get Energy from Universal Plants, it may be helpful to use low-cost Abilities such as Splash!, as Mangosteam is one of the few Aquatic Plants that does not interact with fire, an element that often appears in Aquatic Energy days.

Trivia

 * HD Water Mango.png design was partly made in reference to Water Mango, one of Nixaurum's old plants from Aquatic Castle.
 * This is the first new Plant from Plants vs. Zombies: Cosmic Expeditions to get a page. This excludes any Plants rehashed in order to fit into the game.