I worked out a sneaky good deck, might not be too original, not sure, but I like it for grinding L2 right now from a fresh start.
Gravity Mark
10 Death Pendulum
6 Deathstalkers
4 Poison
1 Hammer (until I can get Arsenic)
6 Momentum
3 Otyugh
30 Cards, and I am at a 90% win rate on Level 2.
When I get Aresenic and possibly some upgrades, I will gladly test it out on L3.
Anyone else tried this deck?