Here are the five Tarkir Dragonstorm Commander decks: And here's every one of the decks' Commanders and alt-Commanders: These decks didn't cost $70, like the MTG Final Fantasy ones
Even if you reject Land Tax and decide to play a more stock U/W Control deck, please take away the lesson of the Land Tax mana base. A key to the success of this archetype is being able to reach four, five, and six mana without your more aggressive opponents Wastelanding you back to 1997
Basically, youre soft-countering their spell unless they pay X
This is one of those decks where I would not feel ashamed playing Fireball, Comet Storm, or Banefire, because I know that the X cost in those spells can be enormous with the right board state
There isnt a specific Toxic Deluge -X/-X effect in Standard right now, so it might align very well with the formats answers