Terra Stomper or Mistcutter Hydra sideboard against U/W/x control?

I lost agains this deck, getting beaten up by a 3000/3000 Genesis Hydra with haste and trample. I won against this deck, blasting out a Deflecting Palm against a 500 damage Crater's Claws. I will try to build this deck with 4x Villainous Wealth to exile my opponents whole deck in a single move.

Good luck! By the way, the person who used Crater's Claws for 500 into a deflecting palm misplayed badly. When you have infinite mana and infinite cards, you should not go for a single-card kill. I explained that in the description.

With a Villainous Wealth build, you often don't need the full combo. Casting it for X=8 will often take over any game.