Burning Sacrifice

Spam of cheap units, sacrifice them, bring them back with Shadowlands Guide and Memory Dredger repeat and finish with fire spells.

Sacrifice a Ticking Grenadin at the altar to deal 5 damage to enemy player
Madness could be the game breaker card, use it well.

The alternative versión would be less cards to bring back units from void and instead fill the void with assembly line to play spiders and Oblivion Spike.

Flamestoker is always good with this deck but I didnt check it seriously yet.

This deck is oriented to middle levels, bronze, silver and gold. I supose for higher ranks It will require some adjustments, probably the verision with spiders and asembly line works better there but in lower levels it works quite well. Try it ;)

I have done the other version of this deck: Infernal Sacrifice, check it!