RB Arcanist

This is an aggressively slanted midrange deck that looks to generate card advantage through graveyard synergies. It utilizes Thoughtseize for disruption and threats like Young Pyromancer and Dreadhorde Arcanist to close games out.

RB Arcanist 

Companion
1
Lurrus of the Dream-Den
Creatures
4
Stitcher's Supplier
4
Dreadhorde Arcanist
4
Kroxa, Titan of Death's Hunger
2
Young Pyromancer
Spells
2
Agadeem's Awakening
1
Bloodchief's Thirst
2
Claim the Firstborn
4
Claim/Fame
4
Faithless Looting
1
Fatal Push
2
Inquisition of Kozilek
1
Spark Harvest
4
Thoughtseize
4
Village Rites
Lands
4
Blightstep Pathway
4
Blood Crypt
2
Dragonskull Summit
4
Fabled Passage
2
Mountain
5
Swamp
Cards (60)
Sideboard (15)
1
Inquisition of Kozilek
3
Magma Spray
2
Scrabbling Claws
2
Abrade
3
Feed the Swarm
1
Lurrus of the Dream-Den
3
Witch's Vengeance