Mozex

I like this deck's name a lot. It looks pretty solid too.

20 lands doesn't seem like nearly enough.
Where are the goblins for voracious dragon to eat?
I think Dragon Whelp is better than Furnace Whelp so you might want to switch the ratios.

I've been trying to find ways to break immortal servitude also. Thanks for sharing :)

If you want to win through infect then don't include kiln fiend or invisible stalker without a means to give them infect. This deck would perform more consistently if you focused on the Kiln Fiend strategy or the Infect strategy.

If you want to go infect Invigorate is an amazing pump card.

I would consider using rancor over spectral flight.