In case you haven't played a game of MTG Modern in a while, Tron decks all share one common trait: Urza lands
For example: Thorough Investigation can make extra Clues, which become card draw, sacrifice fodder for Mondrak's activated ability, and even a way to Venture into the Dungeon once you start cashing them in
1 Decorated Champion
In a bomb heavy, grindy multicolored format, a card like that tends to overperform for me
With toxic 1, Crawling Chorus can start the poison clock for your opponent early on, easily capable of adding a poison counter or two if left unchecked
If you have problems because you play against such decks think about playing Counterspell-like cards or something like Asceticism instead of 2 or 3 creatures (you won't be able to play them if you don't react to your enemys deck anyway...) So all in all this deck is pretty fun to play