Modern RG Tron (Modern)

First order of Business is always to assemble Tron. You should either have a way to assemble it by Turn 3 or enough Board wipe to survive until you do.
We can directly tutor any land with 8 Cards. 4 Ancient stirrings let us dig for both lands and threats.
We have the chromatic Artifacts as 8 Maindeck Cantrips to cycle through the deck and get some colored mana.
Depending on Meta you might want to run Spellskites instead of 2 Relic of Progenitus in the Maindeck. Infect is a Hard Matchup and Spellskite can win game 1 on its own, its also very good against splinter twin.
Since Deathrite Shaman is no longer an Issue you should only Deck in more than 2 RoP if you expect a lot of Graveyard interaction in your meta.
4 Pyroclasm should keep us alive until we have Tron and can cast Oblivion stone or All is Dust.
Oblivion Stone is also a last resort if we cant assemble Tron by turn 5 since it can be paid in rates.
All is Dust is overall a very powerful post-Tron Wrath, but its dead against Affinity.
Dont be afraid to Wipe the board against Affinity, Infect or Twin.
These Decks kill very fast but luckily there is almost no downside to immediately wiping the board with this deck.
As long as we can assemble Tron we can deal with most threats by using Karn and our big wraths.
Wurmcoil Engine allows us to outrace almost all Fair, as well as Control Decks.
its a Threat the Opponent has to deal with while we can go for our endgame.
The big up-side of this Deck is, the inevitability engine Eye of Ugin.
We can search it out, then use it to get Ulamog or Emrakul.
Ulamog fits in nicely at 9 Mana with the Eye, requiring just 3+1 Tron pieces it has to be countered or Pathed.
If Ulamog gets countered we get our Graveyard back in the deck possibly regaining important Tutors or Lands.
Emrakul Serves a different purpose. Hardcasting Emrakul is fun,
but you should only search it out if youre up against a lot of counters, or have the mana to cast it outright.
Emrakul on the board means Victory 99% of the time.

In conclusion this deck aims to assemble the Tron while retaining a winnable board-state.
Post-Tron we use Karn to neutralise threats and wipe the board with our powerful Wraths.
Our win conditions aside from Karn are Wurmcoil engines, which can also end up stalling for
Emrakul and Ulamog, which are coming eventually.