From Beyond the Grave (Pool 3 Reanimator)

A pretty standard Hela Reanimator package, with the added bonus of Electro.

Electro played on turn 3 / 4 allows you to play 6 drops on turns 5 and 6, and the draw back doesn't matter since you're almost always playing a single card a turn.

Future cards to try at the top end are Dr. Doom and Leader. 

This deck got me from rank 60-70 in under a week when I was having issues ranking up using Sera Miracles and Deathwave.

Updated: 11/24/2022 - I have removed Blade from this list and added Black Cat. Seems to be smoother now.