I would swap out Acidic Slime for Reclamation Sage just because it costs less mana to cast, unless you want if for the land destruction and deathtouch. Also adding Polukranos, World Eater or Hydra Broodmaster would be great.

I do play with a group that using specialty lands very frequently that can just overwhelm the board state, so I do like the option to destroy those lands with Acidic Slime. But both of those hydras, while great in their own rights, don't really fit the feel of this deck I think. The major theme being to get mana and trample all over. Direct damage and token creation would be straying from the main theme. Although admittedly, I do have several creatures that create tokens, so I might consider Broodmaster.

Gauntlet of Power

Caged Sun

Thanks for the suggestions! Both are great cards and I will look into getting them for this deck. Any recommendations on what you think I should remove?

Doubling Cube