Lych-Soul

"When damaged to a Skull level on its health bar, the Lych is ethereally immobilized as it revives undead MOAB class Bloons, releases the stiletto-fast Lych-Soul, and steals lives as long as it remains ethereal"

- Ninja Kiwi, describing Lych-Soul in their Version 28.0 patch notes

The Lych-Soul is a boss servant bloon spawned during the Lych boss bloon event. This bloon drains the player's health over time if it is alive and is spawned when Lych reaches a skull. It is spawned at the same time as the MOAB-class bloons resurrected by Lych, and guarantees to spawn at Lych's current location. While this bloon and the resurrected MOABs are alive, Lych can not be damaged. In a similar manner to boss bloons, the Lych-Soul cannot be instakilled by any means, including Ezili's MOAB Hex, Legend of the Night passive ability, or Navarch of the Seas' special hook ability.

Properties
Speed is roughly faster than a BFB, but slower than a MOAB. Immunities are the same as normal Lych. In fact, it is also considered a type of Boss Bloon, which makes Lych-Soul vulnerable to sources that deal extra damage to bosses.

Health
Lych-Soul's health is roughly 2% of the Lych counterpart's base health at each tier plus 1000 multiplied by its current tier.

Life Draining
The Lych-Soul absorbs a certain number of lives for every 4 seconds it exists on the screen. The amount of lives it drains depends on its tier. Lych-Soul can drop lives down to 0 if there are enough lives to drain.

Summary
Lych-Soul is a faster and smaller but much weaker version of Lych that drains the player's lives over time. Use standard countermeasures against Lych to pop Lych-Soul. Do it quickly, or else Lych-Soul will drain a substantial amount of lives off you dependent on its tier. Life regeneration methods can help accumulate a decent chunk of lives to offset the life draining.

Tips

 * At earlier tiers, Sticky Bomb is an excellent choice against Lych-Soul. One or more Sticky Bomb may be required to destroy Lych-Soul. Combine this with other MOAB-class-popping towers such as MOAB Maulers.
 * Overdrive + Embrittlement is another viable combo for beating Lych-Soul, combining multiple projectiles with the Embrittlement's debuff.
 * MOAB Assassin can be used to defeat Lych-Soul in earlier tiers, and MOAB Eliminator can be added for higher tiers. For both options, time well, and don't just spam the ability on Lych without consideration of Lych-Soul coming out.
 * Spike Storm is another suitable option against Lych-Soul, as the ability spikes carry over rounds and dish a lot of damage at once on command.
 * Avatar of Wrath gets rid of Lych-Soul very quickly. This is quite notable at Elite Tier 2.

Quotes
"Revivified MOABs and the Lych-Soul must be destroyed before Lych will return to normal state"

- Ninja Kiwi, Version 28.0 patch notes

"The Lych can revive all MOAB class Bloons besides BADs"

- Ninja Kiwi, Version 28.0 patch notes

Trivia

 * Lych-Soul is the only bloon that is technically a Boss Bloon and also has a parent.