Reanimator RB (Pauper)

Basic Pauper Exhume deck. Draw and discard mechanics for discarding big Eldrazi (Ulamog's Crusher & Hand of Emrakul) and put them on play using Exhume.

/ about the lands /

Bojuka Bog are great as graveyard hate so you can clean opponent's grave. It's a great deal to use it before you cast Exhume.

Terramorphic Expanse and Evolving Wilds are used to fix your mana curve and also to help you fill the graveyard in case you want to cast Gurmag Angler.

/ about the noncreature spells /

Exhume provides the early use of the big creatures. Preferably Ulamog's Crusher, its annihilator 2 will provide the field control you need.

Cathartic Reunion, Faithless Looting and Tormenting Voice give discard and draw power so you can do both: dig deep into the library and discard the big monsters to your graveyard.

Shred Memory is used for its transmute ability so you can fetch CMC 2 spells - mainly Exhume. Its main ability it's also welcome whenever you need to get rid of a specific monster in opponent's graveyard.

Dark Ritual may be used to cast or transmute Shred Memory; cast Exhume or even to hard cast Ulamog's Crusher or Hand of Emrakul.

Dragon Breath is discarded mostly every time so you won't have to spend mana on it.

/ about the creature spells /

Putrid Imp best as a 1st turn drop. Its discard ability gives you a free way to discard the big monsters.

Gurmag Angler its delve ability along with the discard provided by the Putrid Imp or the other spells makes it easier to be cast during the early game.

Ulamog's Crusher and Hand of Emrakul are the real deal: with the perfect opening hand they can be reanimated hasted on turn 1st; but mostly you are going to play them between turns 2nd and 4th.

/ about the sideboard /

Apostle's Blessing can provide some protection to your creatures at the cost of 2 life plus (1). This can be used either to protect your creatures from spells or in a offensive / defensive way during combat.

Duress mainly used as control during the early game as well as later on to remove undesired spells.

Red Elemental Blast basically a blue hate.

Smelt may removes annoying graveyard hate artifacts as well as annoying artifact creatures.