Degen

Degen is the opposite of Regen (see: Properties or Trivia) and first with spread.

Appearance
A Regen reversed (only the heart (therefore, also looks like the symbol on a Spades card)).

Why is it a Debuff (also: Nerf)?
Due to that there are too many Buff properties.

Trivia

 * This is the first property that is an opposite of another (see: Appearance).
 * This is also the second with a heart (see: Properties).
 * First is Regen.
 * Therefore it will also be named "Spaded Remover".
 * This is the 6th property to be added in the future.
 * This is also the first property that is a reference.
 * This is the first property that debuffs a bloon.
 * This uses -1 Layer every 24 frames.
 * This is also the first property with an appearance that is turned.
 * This is also the first property that spreads on other bloons.
 * Therefore a Degen Rush can remove, but not always do so with one or more colored Dot(s).
 * Therefore a tile that is originally Impossible ( ***** (five dark red dots) ) would be either Very hard ( ***** ) or even Hard ( **** ) or Medium ( *** ) or sometimes Easy ( ** ) or very rarely (~.71%) Trivial ( * ).
 * Degen spreads to Regens and Camos (and therefore to Camo Regens).
 * Therefore have some Camo (Regen) Degens and BAM!
 * Degen spreads to even MOABs, BFBs and ZOMGs.