I have recently scouring the net for reference decklists for the current Standard Pauper. I have come upon this website that tallies results from the tournaments on Magic Online. One of the popular and I think is currently the most popular archetype in their metagame is Rakdos midrange. Here is one list which utilizes sacrifice effect and later on Delve into the big creatures.

Rakdos Delve Midrange by Forli
Standard Pauper

Maindeck
7 Mountain
6 Swamp
4 Bloodfell Caves
4 Evolving Wilds
2 Mortuary Mire

4 Vulturous Aven
4 Gurmag Angler
4 Sultai Emissary
3 Sultai Scavenger
3 Ghirapur Gearcrafter
2 Dutiful Attendant

4 Tormenting Voice
4 Bone Splinters
3 Read the Bones
1 Act of Treason
1 Duress
2 Collateral Damage
1 Altar’s Reap
1 Twin Bolt

Sideboard
3 Duress
3 Fiery Impulse
3 Boiling Earth
2 Mire’s Malice
2 Debilitating Injury
1 Butcher’s Glee
1 Act of Treason