Pyromania (Finnhax, Taddl)

You're on duty to keep the ancient magical fire alive.

It shall feast on the sacrifices you offer to him. 

Though to be honest the fire is more of a food addict than a picky eater.

In return the fire grants you his magical ash so you can create buildings that produce fuels  to further feed his undying hunger.

Whatever you do, don't let the fire go out!