Melting

Melting is a Bloon Property that hasn't appeared yet. A Melting Bloon, when popped, can drop whatever it's children are with the Melting property, as well as firing a drop at a tower. The tower effected will permanently be slowed by 2%, and take 1 HP damage. Towers can only be effected once. Just to add to your misery, Blimps can have it too.