The situation is this:

I control a [Shaman en-Kor](https://gatherer.wizards.com/Pages/Card/Details.aspx?name=Shaman%20en-Kor) and a [Nomads en-Kor](https://gatherer.wizards.com/Pages/Card/Details.aspx?name=Nomads%20en-Kor) and a [Mogg Maniac](https://gatherer.wizards.com/Pages/Card/Details.aspx?name=Mogg%20Maniac). During my opponent's turn, I cast [Inferno](https://gatherer.wizards.com/Pages/Card/Details.aspx?name=Inferno), dealing 6 damage to all creatures and all players.

Is it possible for me to redirect the 6 damage done to the shaman and the Nomads to the Mogg Maniac AND have the Mogg deal a total of 18 damage to my opponent before the Mogg Maniac dies?

or...

Will the Inferno kill the Maniac before I can redirect any damage to it from my en-Kor creatures?

I'm confused about the timing of this combo since the shamans and the nomads en-Kor ability is an activated ability that allows me to redirect 1 damage for 0 mana.

Can someone help me understand this? (Is the combo even possible?)