Anything from Cloudposts to creature lands are in season with this guy
Any of these guys that can help me get to six mana will help me draw cards later even if late game mana dorks are usually considered bad draws
Nemata, Grove Guardian, while expensive for a commander, also has the potential to be a huge threat at any point beyond the midgame as both token generator and payoff
And while there are a lot of cards that just straight-up generate more mana, Sword of Feast and Famine stands out for being an equipment card
Hylda of the Icy Crown your opponents creatures, Hylda utilizes an exceptionally controlling strategy
As with all of the cards on this list, this isnt going to make you any friends at all, but thats probably not what youre aiming for here