How can I protect my tron deck against Crumble To Dust
You could go with regular black hand disruption like Thoughtseize or Duress then maybe have some Surgical Extraction to clean them up after that. 

For Bogles, making the player sacrifice a creature would be good. Cruel Edict or Devour Flesh or Geth&#39;s Verdict are some low-mana options. You could go for a bomb with Liliana of the Veil

What's good about the hand disruption is that it's just good in general, against most decks, and might even be in you main deck. The creature sacrificing is a bit more situational, but for decks that ramp w/o mana dorks, or bogles it'd be good to have in the sideboard.