Horrors pink blue and brimstone

[Fluxlord]

So fist of all let me say im totally new to Warhammer and age of Sigmar.

Now i have been reading and painting and thinking what might be nice to play with. One thing i would like to play is with hodes of horrors. Not to be the great victorious one, but just the idea of playin with pink horror daeomons and make your opponent grazy by big amounts of horrors. (I like to paint horrors...??)

And now my question cause i got lost in all the rules, abilities, reinforcement points, etc. Etc., How does it work when you loose a pink horror in a battle? It pops directly two blue horrors? And when the phase is over during battleshock, is it still possible to get the pink horrors back? 

 

Greetz